7/19EX 50/60 Hz Centrifugal Liquid Chillers with HFC-134a ® Start-Up, Operation, and Maintenance Instructions Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 211 Catalog No.
DANGER ! DANGER DO NOT VENT refrigerant relief valves within a building. Outlet from rupture disc or relief valve must be vented outdoors in accordance with the latest edition of ASHRAE 15 (Safety Code for Mechanical Refrigeration). The accumulation of refrigerant in an enclosed space can displace oxygen and cause asphyxiation. PROVIDE adequate ventilation in accordance with ASHRAE 15, especially for enclosed and low overhead spaces.
WARNING ! WARNING DO NOT WELD OR FLAMECUT any refrigerant line or vessel until all refrigerant (liquid and vapor) has been removed from chiller. Traces of vapor should be displaced with dry air or nitrogen and the work area should be well ventilated. Refrigerant in contact with an open flame produces toxic gases. DO NOT USE eyebolts or eyebolt holes to rig machine sections or the entire assembly. DO NOT work on high-voltage equipment unless you are a qualified electrician.
WARNING ! WARNING gas pressure, loosen the collar and unscrew and discard the valve stem. DO NOT INCINERATE. CHECK THE REFRIGERANT TYPE before adding refrigerant to the machine. The introduction of the wrong refrigerant can cause damage or malfunction to this machine. Operation of this equipment with refrigerants other than those cited herein should comply with ASHRAE-15 (latest edition). Contact Carrier for further information on use of this machine with other refrigerants.
CAUTION ! CAUTION DO NOT STEP on refrigerant lines. Broken lines can whip about and cause personal injury. DO NOT climb over a machine. Use platform, catwalk, or staging. Follow safe practices when using ladders. USE MECHANICAL EQUIPMENT (crane, hoist, etc.) to lift or move inspection covers or other heavy components. Even if components are light, use such equipment when there is a risk of slipping or losing your balance. BE AWARE that certain automatic start arrangements CAN ENGAGE THE STARTER.
CAUTION ! CAUTION PERIODICALLY INSPECT all valves, fittings, and piping for corrosion, rust, leaks, or damage. PROVIDE A DRAIN connection in the vent line near each pressure relief device to prevent a build-up of condensate or rain water.
Contents List of Tables List of Figures Safety Considerations Introduction Abbreviations 17/19EX Machine Familiarization Machine Identification Label System Components Cooler Condenser Motor-Compressor Control Center Motor Starter Utility Vessel
Contents Refrigeration Cycle Motor/Oil Refrigeration Cooling Cycle Hermetic Machines (19 Series) Lubrication Cycle Summary Details Open-Drive Machines (17 Series) Lubrication Cycle Summary Details Starters Controls Definitions Analog Signal Digital Signal Volatile Memory
Contents General PIC System Components Processor Module (PSIO) Starter Management Module (SMM) Local Interface Device (LID) 6-Pack Relay Board 8-Input Modules Oil Heater Contactor (1C) Oil Pump Contactor (2C) Hot Gas Bypass Contactor Relay (3C) (Optional) Control Transformers (T1-T4) Control and Oil Heater Voltage Selector (S1) Oil Differential Pressure/Power Supply Module
Contents LID Operation and Menus General Alarms and Alerts LID Default Screen Menu Items Menu Structure To View or Change Point Status Override Operations To View or Change Time Schedule Operation To View and Change Set Points Service Operation PIC System Functions Capacity Control Entering Chilled Water Control Deadband Proportional Bands and Gain
Contents Demand Limiting Machine Timers Occupancy Schedule Safety Controls Shunt Trip Default Screen Freeze Motor Cooling Control (Hermetic Motors Only) Auxiliary Oil Pump Control (Open-Drive Machines Only) Shaft Seal Oil (Open Drive Machines Only) Ramp Loading Control Capacity Override High Discharge Temperature Control Oil Sump Temperature Control Oil Cooler Remote Start/Stop Controls
Contents Spare Safety Inputs Spare Alarm Contacts Condenser Pump Control Condenser Freeze Prevention Tower-Fan Relay Auto.
Contents Load Balancing Auto.
Contents Start-Up/Shutdown/Recycle Sequence Local Start-Up Shutdown Sequence Automatic Soft Stop Amps Threshold Chilled Water Recycle Mode Safety Shutdown Before Initial Start-Up Job Data Required Equipment Required Using the Utility Vessel and Pumpout System Remove Shipping Packaging Open-Drive Motor Electrical Connection Open-Drive Motor Auxiliary Devices Open Oil Circuit Valves
Contents Torque All Gasketed Joints Check Machine Tightness Refrigerant Tracer Leak Test Machine Standing Vacuum Test Machine Dehydration Inspect Water Piping Check Optional Pumpout Compressor Water Piping Check Relief Devices Inspect Wiring Check Insulation Resistance (Hermetic Motor) Check Insulation Resistance (Open-Drive Motor) Open-Drive Motor Pre-Start Checks Carrier Comfort Network Interface
Contents Check Starter Mechanical-Type Starters Solid-State Starters Oil Charge Power Up the Controls and Check the Oil Heater Software Version Set Up Machine Control Configuration Input the Design Set Points Input the Local Occupied Schedule (OCCPC01S) Input Service Configurations Password Input Time and Date Change LID Configuration If Necessary Modify Controller Identification If Necessary Input Equipment Service Parameters If Necessary
Contents Modify Equipment Configuration If Necessary Check Voltage Supply Perform an Automated Control Test Check Pumpout System Controls and Optional Pumpout Compressor High Altitude Locations Charge Refrigerant into Machine Trimming Refrigerant Charge Initial Start-Up Preparation Manual Operation of the Guide Vanes Dry Run to Test Start-Up Sequence Check Rotation (Open-Drive Motor) Check Rotation (Hermetic Motor) If Rotation Is Proper If the Motor Rotation Is Not Clockwise
Contents Check Oil Pressure and Compressor Stop Calibrate Motor Current Demand Setting To Prevent Accidental Start-Up Hot Alignment Check for Open-Drive Machines Doweling for Open-Drive Machines Check Machine Operating Condition Instruct the Customer Operator Cooler-Condenser Utility Vessel Pumpout System Motor Compressor Assembly Motor Compressor Lubrication System Control System Auxiliary Equipment Describe Machine Cycles
Contents Review Maintenance Safety Devices and Procedures Check Operator Knowledge Review the Start-Up, Operation, and Maintenance Manual Operating Instructions Operator Duties Prepare the Machine for Start-Up To Start the Machine Check the Running System To Stop the Machine After Limited Shutdown Extended Shutdown After Extended Shutdown Cold Weather Operation Manual Guide Vane Operation Refrigeration Log
Contents Pumpout and Refrigerant Transfer Procedures Preparation Operating the Optional Pumpout Compressor To Read Refrigerant Pressures Transferring Refrigerant from Normal Operation into the Utility Vessel Transferring Refrigerant from Normal Operation into the Cooler/Condenser/Compressor Section Return Refrigerant to Normal Operating Conditions General Maintenance Refrigerant Properties Adding Refrigerant Removing Refrigerant Adjusting the Refrigerant Charge Refrigerant Leak Testing Leak Rate
Contents Test After Service, Repair, or Major Leak Refrigerant Tracer To Pressurize with Dry Nitrogen Repair the Leak, Retest, and Apply Standing Vacuum Test Checking Guide Vane Linkage Contact Seal Maintenance (Open-Drive Machines) Seal Disassembly Seal Reassembly Machine Alignment (Open-Drive Machines) Alignment Methods Preliminary Alignment Near Final Alignment Final Alignment Hot Alignment Check Doweling
Contents Weekly Maintenance Check the Lubrication System Scheduled Maintenance Service Ontime Inspect the Control Center Check Safety and Operating Controls Monthly Changing Oil Filter 19EX Compressors FA Style Compressors Oil Specification Oil Changes To Change the Oil Refrigerant Filter Oil Reclaim Filter
Contents Inspect Refrigerant Float System Inspect Relief Valves and Piping Coupling Maintenance (Open-Drive Machines) Procedure Motor Maintenance (Open-Drive Machines) Cleanliness Sleeve Bearings Open-Drive Motor Handling/Rigging Open-Drive Motor Storage Compressor Bearing and Gear Maintenance Inspect the Heat Exchanger Tubes Cooler Condenser Water Leaks Water Treatment
Contents Inspect the Starting Equipment Check Pressure Transducers Pumpout System Maintenance Optional Pumpout Compressor Oil Charge Pumpout Safety Control Settings Ordering Replacement Chiller Parts Open-Drive Motor Renewal Parts Troubleshooting Guide Overview Checking the Display Messages Checking Temperature Sensors Resistance Check Voltage Drop Check Sensor Accuracy Dual Temperature Sensors
Contents Checking Pressure Transducers Oil Differential Pressure/Power Supply Module Calibration Troubleshooting Transducers Transducer Replacement Control Algorithms Checkout Procedure Control Test Control Modules Red LED Green LEDs Notes on Module Operation Processor Module (PSIO) Inputs Outputs
Contents Starter Management Module (SMM) Inputs Outputs Options Modules (8-Input) Replacing Defective Processor Modules Installation of New PSIO Module 17/19EX Physical Data and Wiring Schematics Compressor Fits and Clearances Initial Start-Up Checklist for 17/19EX Centrifugal Liquid Chiller
Contents List of Tables Table 1 — Major PIC Components and Panel Locations Table 2 — LID Screens Example 1 — Status01 Display Screen Example 2 — Status02 Display Screen Example 3 — Status03 Display Screen Example 4 — Setpoint Display Screen Example 5 — Configuration (Config) Display Screen Example 6 — Lead/Lag Configuration Display Screen Example 7 — Service1 Display Screen Example 8 — Service2 Display Screen Example 9 — Service3 Display Screen Example 10 — Maintenance (Maint01) Displa
Contents Table 3 — Protective Safety Limits and Control Settings Table 4 — Capacity Overrides Table 5A — HFC-134a Pressure — Temperature (F) Table 5B — HFC-134a Pressure — Temperature (C) Table 6 — Recommended Torque Table 7 — Control Test Menu Functions Table 8 — LID Primary and Secondary Messages and Custom Alarm/ Alert Messages with Troubleshooting Guides A. Shutdown with ON/OFF/RESET-OFF B. Timing Out or Timed Out C. In Recycle Shutdown D. Pre-Start Alerts E. Normal or AUTO.-RESTART F.
Contents Table 8 — LID Primary and Secondary Messages and Custom Alarm/ Alert Messages with Troubleshooting Guides (Continued) H. Normal Run with Reset, Temperature, Or Demand I. Normal Run Overrides Active (Alerts) J. Out-of-Range Sensor Failures K. Machine Protect Limit Faults L. Machine Alerts M. Spare Sensor Alert Messages N.
Contents Table 14 — Marine Waterbox Cover Weights Table 15 — NIH Waterbox Cover Weights Table 16 — Auxiliary Systems, Electrical Data Table 17 — Open-Drive Compressor Fits and Clearances Table 18 — Hermetic Compressor Fits and Clearances
Contents List of Figures Figure 1 — 17/19EX Identification Figure 2 — Typical 17EX Installation Figure 3 — Typical 19EX Installation Figure 4 — Refrigerant, Motor Cooling, and Oil Cooling Cycles Figure 5 — Hermetic Compressor Lubrication System (EX Compressor Shown) Figure 6 — Open-Drive (17 Series) Lubrication Cycle Figure 7 — 17EX Controls and Sensor Locations Figure 8 — 19EX Controls and Sensor Locations Figure 9 — Control Center (Front View); Shown with Options Module Figure 10 — Control Sensors (Temper
Contents Figure 13 — Power Panel with Options (Hermetic Machine Shown) Figure 14 — LID Default Screen Figure 15 — LID Service Screen Figure 16 — 17/19EX Menu Structure Figure 17 — 17/19EX Service Menu Structure Figure 18 — Example of Point Status Screen (Status01) Figure 19 — Example of Time Schedule Operation Screen Figure 20 — Example of Set Point Screen Figure 21 — 17/19EX Hot Gas Bypass/Surge Prevention Figure 22 — 17/19EX with Default Metric Settings Figure 23 — Example of Attach to Network Device Scre
Contents Figure 27 — Shipping Bolt on Open Drive Motor Figure 28 — 17/19EX Leak Test Procedures Figure 29 — Dehydration Cold Trap Figure 30 — Correct Motor Rotation Figure 31 — Refrigeration Log Figure 32 — Pumpout Arrangement and Valve Number Locations (12-ft Vessel Shown) Figure 33 — Pumpout Unit Wiring Schematic (19EX Shown) Figure 34 — Optional Pumpout Compressor Figure 35 — Electronic Vane Actuator Linkage Figure 36 — Compressor Contact Seal (Open-Drive Machines) Figure 37 — Checking Preliminary Alignm
Contents Figure 41 — Adjusting Angular Misalignment in Plan Figure 42 — Correcting Parallel Misalignment Figure 43 — Alignment Check — Assembled Coupling Figure 44 — Removing the Oil Filter Figure 45 — Typical Float Valve Arrangement Figure 46 — Lifting Open-Drive Motor Figure 47 — Controls for Optional Pumpout Compressor Figure 48 — Oil Differential Pressure/Power Supply Module Figure 49 — PSIO Module LED Locations Figure 50 — LID Module (Rear View) and LED Locations Figure 51 — Processor (PSIO) Module Fig
Contents Figure 55 — Open-Drive Compressor Fits and Clearances Figure 56 — Hermetic Compressor Fits and Clearances Figure 57 — Electronic PIC Controls Wiring Schematic — Hermetic Machine Figure 58 — Electronic PIC Controls Wiring Schematic — Open-Drive Machine Figure 59 — Machine Power Panel, Starter Assembly, and Motor Wiring Schematic Figure 60 — Hermetic Drive — Power Panel with Water-Cooled Oil Cooler Figure 61 — Hermetic Drive — Power Panel with Motor Cooling Solenoid Figure 62 — Open Drive — Power Pan
Introduction Prior to initial start-up of the 17/19EX unit, those involved in the start-up, operation, and maintenance should be thoroughly familiar with these instructions and other necessary job data. This book is outlined so that you may become familiar with the control system before performing start-up procedures. Procedures in this manual are arranged in the sequence required for proper machine start-up and operation. WARNING ! WARNING This unit uses a microprocessor control system.
WARNING ! WARNING This equipment uses, and can radiate, radio frequency energy. If not installed and used in accordance with the instruction manual, it may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment.
Abbreviations Frequently used abbreviations in this manual include: CCN — Carrier Comfort Network LCDW — Leaving Condenser Water CCW — Counterclockwise LCW — Leaving Chilled Water CHW — Chilled Water LED — Light-Emitting Diode CHWR — Chilled Water Return LID — Local Interface Device CHWS — Chilled Water Supply OLTA — Overload Trip Amps CW — Clockwise PIC — Product Integrated Control ECW — Entering Chilled Water PSIO — Processor Sensor Input/Output Module ECDW — Entering
17/19EX Machine Familiarization (Figure 1, Figure 2, and Figure 3) Machine Identification Label The identification label is located on the right side of the machine control center panel. The label contains information on model number, refrigerant charge, rated voltage, etc. System Components The components include the cooler and condenser heat exchangers in separate vessels, motor-compressor, lubrication package, control center, utility vessel, and motor starter.
Cooler This vessel (also known as the evaporator) is located underneath the condenser, next to the utility vessel. The cooler is maintained at lower temperature/pressure so that evaporating refrigerant can remove heat from water flowing through its internal tubes. Condenser The condenser operates at a higher temperature/pressure than the cooler, and has water flowing through its internal tubes in order to remove heat from the refrigerant.
Motor Starter (Purchased Separately) The starter allows for the proper starting and disconnecting of the electrical energy for the compressor-motor, oil pump, oil heater, and control panels. Utility Vessel During normal operation, this vessel functions as an economizer, returning flash gas to the second stage of the compressor and increasing the efficiency of the refrigeration cycle. During periods of shutdown and service, the utility vessel can serve as a storage tank for the refrigerant.
Compression raises the refrigerant temperature above that of the water flowing through the condenser tubes. When the warm (typically 98 to 102 F [37 to 40 C]) refrigerant vapor comes into contact with the condenser tubes, the relatively cool condensing water (typically 85 to 95 F [29 to 35 C]) removes some of the heat and the vapor condenses into a liquid. The liquid refrigerant passes through an orifice into the FLASC chamber.
Motor/Oil Refrigeration Cooling Cycle The motor is cooled by liquid refrigerant taken from the bottom of the condenser vessel (Figure 4). Flow of refrigerant is maintained by the pressure differential that exists due to compressor operation. After the refrigerant flows past an isolation valve, an in-line filter, and a sight glass/moisture indicator, the flow is split between motor cooling and oil cooling systems. Flow to the motor flows through an orifice and into the motor.
always a minimum flow bypassing the TXV, which flows through an orifice. The TXV valve regulates flow into the oil/refrigerant plate and frame-type heat exchanger. The bulb for the expansion valve controls oil temperature to the bearings. The refrigerant leaving the heat exchanger then returns to the cooler. On machines with FA compressors, the oil is water cooled.
Details Oil is charged into the reservoir (Item 1) through a hand valve (Item 4) which also functions as an oil drain. If there is refrigerant in the machine, a pump is required for charging. Sight glasses (Item 10) on the reservoir wall permit observation of the oil level. The normal operating oil level is from the middle of the lower sight glass to the top of the lower sight glass.
As the oil leaves the oil cooler, it passes the oil pressure transducer (Item 14) and then the thermostatic expansion valve bulb (Item 13). The oil flow is then divided, and a portion flows to the motor-end bearing (Item 19) and seal. The remainder lubricates the compressor transmission (Item 2) and the thrust and journal bearings (Item 3). Thrust bearing temperature is indicated at the Local Interface Device (LID). Oil from each circuit returns by gravity to the reservoir.
During the machine start-up, the PIC will energize the oil pump and provide 15 seconds of prelubrication to the bearings after the oil pressure is verified and before the controls start the compressor. During shutdown, the oil pump will run for 60 seconds after the compressor actually shuts down for the purpose of post-lubrication. The oil pump can also be energized for testing purposes in controls test. Ramp loading can slow the rate of guide vane opening to minimize oil foaming at start-up.
Open-Drive Machines (17 Series) Lubrication Cycle Summary The main oil pump and oil reservoir are contained in the compressor base. Oil is pumped through an oil cooler and a filter to remove heat and any foreign particles. A portion of the oil is then directed to shaft-end bearing and the shaft seal. The balance of the oil lubricates the compressor transmission and the thrust and journal bearings. The bearing and transmission oil returns directly to the reservoir to complete the cycle.
Water flow through the oil cooler is manually adjusted by a plug valve (Item 9) to maintain the oil at an operating temperature of approximately 145 F (63 C). During shutdown, the oil temperature is also maintained at 150 to 160 F (65 to 71 C) by an immersion heater (Item 3) in order to minimize absorption of refrigerant by the oil. Upon leaving the oil cooler, the oil is filtered (11) and a portion is directed to the seal-end bearing (17) and the shaft seal (18).
Starters All starters, whether supplied by Carrier or the customer, must meet Carrier Starter Specification Z-375. This specification can be obtained from the Carrier Sales Representative. The purpose of this specification is to ensure the compatibility of the starter and the machine. Many styles of compatible starters are available, including solid-state starters, autotransformer, wye-delta closed transition starters, and full voltage starters.
Volatile Memory Volatile memory is memory incapable of being sustained if power is lost and subsequently restored. CAUTION ! CAUTION The memory of the PSIO and LID modules are volatile. If the battery in a module is removed or damaged, all programming will be lost. General The 17/19EX hermetic centrifugal liquid chiller contains a microprocessor-based control center that monitors and controls all operations of the machine.
Click here for Figure 6 — Open-Drive (17 Series) Lubrication Cycle PIC System Components The Product Integrated Control (PIC) is the control system on the machine. See Table 1. The PIC controls the operation of the machine by monitoring all operating conditions. The PIC can diagnose a problem and let the operator know what the problem is and what to check. It promptly positions the guide vanes to maintain leaving chilled water temperature.
The PIC consists of 3 modules housed inside the 3 major components.
These inputs are connected to the PSIO module. The PSIO also provides outputs to the: guide vane actuator; oil pump; oil heater; hot gas bypass (optional); motor cooling solenoid; and alarm contact. The PSIO communicates with the LID, the SMM, and the optional 8-input modules for user interface and starter management. Starter Management Module (SMM) This module is located within the starter cabinet.
6-Pack Relay Board This device is a cluster of 6 pilot relays located in the control center. It is energized by the PSIO for the oil pump, oil heater, alarm, optional hot gas bypass relay, and motor cooling solenoid (19EX machines) on auxiliary oil pump (17EX machines). 8-Input Modules One optional module is factory installed in the control center panel when ordered. There can be up to 2 of these modules per chiller with 8 spare inputs each.
Hot Gas Bypass Contactor Relay (3C) (Optional) This relay, located in the power panel, controls the opening of the hot gas bypass valve. The PIC energizes the relay during low load, high lift conditions. Oil Auxiliary Relay (4C) This relay, supplied only with open-drive machines, opens the oil cooler solenoid valve and interlocks the oil pump with the compressor.
pressure and outputs the difference as an oil differential pressure signal to the PSIO. The PSIO converts this signal to differential oil pressure. To calibrate this reading, refer to the Troubleshooting Guide, Checking Pressure Transducers section.
Click here for Figure 13 — Power Panel with Options (Hermetic Machine Shown) LID Operation and Menus (Figure 14, Figure 15, Figure 16, Figure 17, Figure 18, Figure 19, and Figure 20) General • • • • • The LID display will automatically revert to the default screen after 15 minutes if no softkey activity takes place and if the machine is not in the Pumpdown mode (Figure 14).
Alarms and Alerts Alarm (*) and alert (!) status are indicated on the Default screen and the Status tables. An alarm (*) will shut down the compressor. An alert (!) notifies the operator that an unusual condition has occurred. The machine will continue to operate when an alert is shown. Alarms are indicated when the control center alarm light (!) flashes.
LID Default Screen Menu Items To perform any of the operations described below, the PIC must be powered up and have successfully completed its self test. The Default screen menu selection offers four options (Status, Schedule, Setpoint, and Service). The Status menu allows for viewing and limited calibration/modification of control points and sensors, relays and contacts, and the options board.
Menu Structure To perform any of the operations described below, the PIC must be powered up and have successfully completed its self test. • Press MENU to select from the four available options. CCN • RESET MENU Press the softkey that corresponds to the desired menu structure. STATUS • LOCAL SCHEDULE SETPOINT SERVICE Press NEXT or PREVIOUS to highlight the desired entry.
• Press SELECT to access the highlighted point. NEXT • SELECT EXIT Press QUIT to leave the selected decision or field without saving any changes. INCREASE • PREVIOUS DECREASE QUIT ENTER Or, press ENTER to leave the selected decision or field and save changes.
To View or Change Point Status (Figure 18) Point Status is the actual value of all of the temperatures, pressures, relays, and actuators sensed and controlled by the PIC. 1. On the Menu screen, press STATUS to view the list of Point Status tables. STATUS SCHEDULE SETPOINT SERVICE 2. Press NEXT or PREVIOUS to highlight the desired status table.
Click here for Figure 17 — 17/19EX Service Menu Structure 3. Press SELECT to view the desired Point Status table. NEXT PREVIOUS SELECT ENTER 4. On the Point Status table press NEXT or PREVIOUS until desired point is displayed on the screen. NEXT PREVIOUS SELECT ENTER For Discrete Points — Press START or STOP, YES or NO, ON or OFF, etc. to select the desired state.
For Analog Points — Press INCREASE or DECREASE to select the desired value. INCREASE DECREASE RELEASE ENTER RELEASE ENTER 5. Press ENTER to register new value. INCREASE DECREASE Override Operations Note: When overriding or changing metric values, it is necessary to hold the softkey down for a few seconds in order to see a value change, especially on kilopascal values.
To Remove an Override 1. On the Point Status table press NEXT or PREVIOUS to highlight the desired point. NEXT PREVIOUS SELECT EXIT 2. Press SELECT to access the highlighted point. NEXT PREVIOUS SELECT EXIT 3. Press RELEASE to remove the override and return the point to the PIC’s automatic control.
Override Indication An override value is indicated by ‘‘SUPVSR,’’ ‘‘SERVC,’’ or ‘‘BEST’’ flashing next to the point value on the Status table. To View or Change Time Schedule Operation (Figure 19) 1. On the Menu screen, press SCHEDULE . STATUS SCHEDULE SETPOINT SERVICE 2. Press NEXT or PREVIOUS to highlight one of the following schedules. OCCPC01S — LOCAL Time Schedule OCCPC02S — ICE BUILD Time Schedule OCCPC03-99S — CCN Time Schedule (Actual number is defined in Config table.
3. Press SELECT to access and view the time schedule. NEXT PREVIOUS SELECT EXIT 4. Press NEXT or PREVIOUS to highlight the desired period or override that you wish to change. NEXT PREVIOUS SELECT EXIT 5. Press SELECT to access the highlighted period or override.
6. a. Press INCREASE or DECREASE to change the time values. Override values are in onehour increments, up to 4 hours. INCREASE DECREASE ENTER EXIT b. Press ENABLE to select days in the day-of-week fields. Press DISABLE to eliminate days from the period. ENABLE DISABLE ENTER EXIT 7. Press ENTER to register the values and to move horizontally (left to right) within a period.
8. Press EXIT to leave the period or override. NEXT PREVIOUS SELECT EXIT 9. Either return to Step 4 to select another period or override, or press EXIT again to leave the current time schedule screen and save the changes. NEXT PREVIOUS SELECT EXIT 10. Holiday Designation (HOLIDEF table) may be found in the Service Operation section. You must assign the month, day, and duration for the holiday. The Broadcast function in the Brodefs table also must be enabled for holiday periods to function.
To View and Change Set Points (Figure 20) 1. To view the Set Point table, at the Menu screen press SETPOINT. STATUS SCHEDULE SETPOINT SERVICE 2. There are 4 set points on this screen: Base Demand Limit; LCW Set Point (leaving chilled water set point); ECW Set Point (entering chilled water set point); and ICE BUILD set point. Only one of the chilled water set points can be active at one time, and the type of set point is activated in the Service menu.
4. Press SELECT to modify the highlighted set point. NEXT PREVIOUS SELECT EXIT 5. Press INCREASE or DECREASE to change the selected set point value. INCREASE DECREASE QUIT ENTER 6. Press ENTER to save the changes and return to the previous screen. INCREASE DECREASE QUIT ENTER Service Operation To view the menu-driven programs available for Service Operation, see Service Operation section. For examples of LID display screens, see Table 2.
Table 2 — LID Screens Example 1 — Status01 Display Screen Example 2 — Status02 Display Screen Example 3 — Status03 Display Screen Example 4 — Setpoint Display Screen Example 5 — Configuration (CONFIG) Display Screen Example 6 — Lead/Lag Configuration Display Screen Example 7 — Service1 Display Screen Example 8 — Service2 Display Screen Example 9 — Service3 Display Screen Example 10 — Maintenance (Maint01) Display Screen Example 11 — Maintenance (Maint02) Display Screen Example 12 — Maintenance (Maint03) Dis
PIC System Functions Note: Throughout this manual, words printed in capital letters and italics are values that may be viewed on the LID. See Table 2 for examples of LID screens. Point names are listed in the Description column. An overview of LID operation and menus is given in Figure 14, Figure 15, Figure 16, Figure 17, Figure 18, Figure 19, and Figure 20.
Deadband This is the tolerance on the chilled water/ brine temperature CONTROL POINT. If the water temperature goes outside of the DEADBAND, the PIC opens or closes the guide vanes in response until it is within tolerance. The PIC may be configured with a 0.5° to 2° F (0.3° to 1.1° C) deadband. DEADBAND may be viewed or modified on the Equipment Service1 table. For example, a 1° F (0.6° C) deadband setting controls the water temperature within ±0.5° F (0.3° C) of the control point.
vane response to chilled water temperature below deadband plus control point. It can be adjusted on the LID from a setting of 2 to 10, and the default setting is 6.0. Increasing either of these settings will cause the vanes to respond slower than a lower setting. The PROPORTIONAL ECW GAIN can be adjusted at the LID display from a setting of 1.0 to 3.0, with a default setting of 2.0. Increase this setting to increase guide vane response to a change in entering chilled water temperature.
The chiller also maintains a start-to-start timer and a stop-to-start timer. These timers limit how soon the machine can be started. See the Start-Up/Shutdown/Recycle Sequence section for operational information. Occupancy Schedule This schedule determines when the chiller is either occupied or unoccupied. Each schedule consists of from one to 8 occupied/unoccupied time periods, set by the operator.
Note: This schedule is for illustration only, and is not intended to be a recommended schedule for chiller operation. Whenever the chiller is in the LOCAL mode, the machine uses Occupancy Schedule 01. The Ice Build Time Schedule is Schedule 02. When in the CCN mode, Occupancy Schedule 03 is used. The CCN schedule number is defined on the Config table in the Equipment Configuration table. The schedule number can change to any value from 03 to 99.
Safety Controls The PIC monitors all safety control inputs, and if required, shuts down the machine or limits the guide vanes to protect the machine from possible damage from any of the following conditions: • high bearing temperature • high motor winding temperature • high discharge temperature • low oil pressure • low cooler refrigerant temperature/pressure • condenser high pressure or low pressure • inadequate water/brine cooler and condenser flow • high, low, or loss of voltage • excessive motor acceler
CAUTION ! CAUTION If compressor motor overload or ground fault occurs, check the motor for grounded or open phases before attempting a restart. If the controller initiates a safety shutdown, it displays the fault on the LID with a primary and a secondary message, and energizes an alarm relay in the starter and blinks the alarm light on the control center. The alarm is stored in memory and can be viewed in the PIC Alarm History table along with a message for troubleshooting.
Default Screen Freeze Whenever an alarm occurs, the LID default screen will freeze displaying the condition of the machine at the time of alarm. Knowledge of the operating state of the chiller at the time an alarm occurs is useful when troubleshooting. Current machine information can be viewed on the Status tables. Once all existing alarms are cleared (by pressing the RESET softkey), the default LID will return to normal operation.
alert threshold (18 psid [124 kPa]). Once running, the auxiliary oil pump will remain on until the compressor is turned off and will deenergize with the main oil pump after the post-lube time period. Shaft Seal Oil Control (Open Drive Machines Only) All open drive machines require that the shaft seal be bathed in oil at all times, especially when the machine is not running. This ensures that refrigerant does not leak past the seal.
There are 2 methods of ramp loading with the PIC. Ramp loading can be based on chilled water temperature or on motor load. 1. Temperature ramp loading limits the rate at which either leaving chilled water or entering chilled water temperature decreases by an operator-configured rate. The lowest temperature ramp table will be used the first time the machine is started (at commissioning).
Whenever the motor current demand limit set point is reached, it activates a capacity override, again with a 2-step process. Exceeding 110% of the rated load amps for more than 30 seconds will initiate a safety shutdown. The compressor high lift (surge prevention) set point will cause a capacity override as well. When the surge prevention set point is reached, the controller normally will only hold the guide vanes from opening. If so equipped, the hot gas bypass valve will open instead of holding the vanes.
Oil Sump Temperature Control The oil sump temperature control is regulated by the PIC which uses the oil heater relay when the machine is shut down. As part of the pre-start checks executed by the controls, oil sump temperature is compared against evaporator refrigerant temperature. If the difference between these 2 temperatures is 50 F (27.8 C) or less, the start-up will be delayed until the oil temperature is 50 F (27.8 C) or more. Once this temperature is confirmed, the start-up continues.
Oil Cooler The oil must be cooled when the compressor is running. EX Compressors: This is accomplished through a small, plate-type heat exchanger. The heat exchanger uses liquid condenser refrigerant as the cooling liquid. A refrigerant thermostatic expansion valve (TXV) regulates refrigerant flow to control oil temperature entering the bearings. There is always a flow of refrigerant bypassing the TXV.
Automatic Restart After a Power Failure is not activated when a power failure occurs, and the remote contact is closed, the machine will indicate an alarm because of the loss of voltage. The contacts for Remote Start are wired into the starter at terminal strip TB5, terminals 8A and 8B. See the certified drawings for further details on contact ratings. The contacts must be dry (no power).
Condenser Pump Control The machine will monitor the CONDENSER PRESSURE and may turn on this pump if the pressure becomes too high whenever the compressor is shut down. CONDENSER PRESSURE OVERRIDE is used to determine this pressure point. This value is found on the Equipment Service1 LID table and has a default value (Table 4).
CONDENSER FREEZE POINT, then the CONDENSER WATER PUMP shall be energized until the CONDENSER REFRIG TEMP is greater than the CONDENSER FREEZE POINT plus 5° F (2.7° C). An alarm will be generated if the machine is in PUMPDOWN mode and the pump is energized. An alert will be generated if the machine is not in PUMPDOWN mode and the pump is energized. If in recycle shutdown, the mode shall transition to a non-recycle shutdown.
IMPORTANT: Afield-supplied water temperature control system for condenser water should be installed. The system should maintain the leaving condenser water temperature at a temperature that is 20° F (11° C) above the leaving chilled water temperature. CAUTION ! CAUTION The tower-fan relay control is not a substitute for a condenser water temperature control.
Water/Brine Reset Three types of chilled water or brine reset are available and can be viewed or modified on the Equipment Configuration table Config selection. The LID default screen status message indicates when the chilled water reset is active. The Control Point temperature on the Status01 table indicates the machine’s current reset temperature. To activate a reset type, input all configuration information for that reset type in the Config table.
automatic reset to the set point based on a temperature sensor wired to the number one 8input module (see wiring diagrams or certified drawings). The temperature sensor must be wired to terminal J1-19 and J1-20. To configure Reset Type 2, enter the temperature of the remote sensor at the point where no temperature reset will occur. Next, enter the temperature at which the full amount of reset will occur. Then, enter the maximum amount of reset required to operate the machine.
Demand Limit Control, Option (Requires Optional 8-Input Module) The demand limit may be externally controlled with a 4 to 20 mA signal from an energy management system (EMS). The option is set up on the Config table. When enabled, the control is set for 100% demand with 4 mA and an operator configured minimum demand set point at 20 mA. The Demand Reset input from an energy management system is hardwired into the number one, 8-input module.
Points, (T1/P1;T2/P2). These points have default settings as defined on the Service1 table, or on Table 4. These settings and the algorithm function are graphically displayed in Figure 21 and Figure 22. The 2 sets of load points on this graph (default settings are shown) describe a line which the algorithm uses to determine the maximum lift of the compressor.
Surge Protection Surging of the compressor can be determined by the PIC through operator configured settings. Surge will cause amperage fluctuations of the compressor motor. The PIC monitors these amperage swings, and if the swing is greater than the configurable setting in one second, then one surge count has occurred. The SURGE DELTA PERCENT AMPS setting is displayed and configured on the Service1 screen. It has a default setting of 25% amps, SURGE PROTECTION COUNTS can be monitored on the Maint03 table.
Lead/Lag Control Lead/Lag is a control system process that automatically starts and stops a lag or second chiller in a 2-chiller water system. Refer to Figure 16 and Figure 17 for menu, table, and screen selection information. On machines that have PSIO software with Lead/Lag capability, it is possible to utilize the PIC controls to perform the lead/lag function on 2 machines.
Common Point Sensor Installation Lead/lag operation does not require a common chilled water point sensor. Common point sensors can be added to the 8-input option module, if desired. Refer to the certified drawings for termination of sensor leads. Note: If the common point sensor option is chosen on a chilled water system, both machines should have their own 8-input option module and common point sensor installed.
Machine Communication Wiring Refer to the machine’s Installation Instructions and Carrier Comfort Network Interface section for information on machine communication wiring. Lead/Lag Operation The PIC control provides the ability to operate 2 chillers in the LEAD/LAG mode. It also provides the additional ability to start a designated standby chiller when either the lead or lag chiller is faulted and capacity requirements are not met. The lead/lag option operates in CCN mode only.
If the address assignments placed into the LAG ADDRESS and STANDBY ADDRESS values conflict, the lead/lag will be disabled and an alert (!) message will occur. For example, if the LAG ADDRESS matches the lead machine’s address, the lead/lag will be disabled and an alert (!) message will occur. The lead/lag maintenance screen (MAINT04) will display the message ‘INVALID CONFIG’ in the LEAD/LAG CONFIGURATION and CURRENT MODE fields.
If the configured lead chiller does not complete the start-up before the PRESTART FAULT TIMER (user configured value) elapses, then the lag chiller shall be started and the lead chiller will shut down. The lead chiller then monitors the start request from the acting lead chiller to start. The PRESTART FAULT TIMER is initiated at the time of a start request.
Lag Chiller Start-Up Requirements Before the lag chiller can be started, the following conditions must be met: 1. Lead chiller ramp loading must be complete. 2. Lead chiller CHILLED WATER temperature must be greater than the CONTROL POINT plus 1/2 the WATER/BRINE DEADBAND. Note: The chilled water temperature sensor may be the leaving chilled water sensor, the return water sensor, the common supply water sensor, or the common return water sensor, depending on which options are configured and enabled. 3.
Lag Chiller Shutdown Requirements The following conditions must be met in order for the lag chiller to be stopped. 1. Lead chiller COMPRESSOR MOTOR LOAD value is less than the lead chiller percent capacity plus 15%. Note: Lead chiller percent capacity = 100 – LAG PERCENT CAPACITY The LAG PERCENT CAPACITY value is configured on the Lead/Lag Configuration screen. 2. The lead chiller chilled water temperature is less than the CONTROL POINT plus 1/2 of the WATER/BRINE DEADBAND. 3.
If the lag chiller faults when the lead chiller is also faulted, the standby chiller reverts to a stand-alone CCN mode of operation. If the lead chiller is in an alarm (*) condition (as shown on the LID panel), the RESET softkey is pressed to clear the alarm, and the chiller is placed in the CCN mode, the lead chiller will now communicate and monitor the RUN STATUS of the lag and standby chillers.
Auto. Restart After Power Failure When an autorestart condition occurs, each chiller may have a delay added to the start-up sequence, depending on its lead/lag configuration. The lead chiller does not have a delay. The lag chiller has a 45-second delay. The standby chiller has a 90-second delay. The delay time is added after the chiller water flow verification. The PIC controls ensure that the guide vanes are closed.
The Ice Build Time Schedule defines the period during which ice build is active if the ice build option is ENABLED. If the Ice Build Time Schedule overlaps other schedules defining time, then the Ice Build Time Schedule shall take priority. During the ice build period, the WATER/BRINE CONTROL POINT is set to the ICE BUILD SETPOINT for temperature control.
or standby chiller for lead/lag and is actively controlled by a lead chiller. The lead chiller communicates the ICE BUILD SETPOINT, desired CHILLER START/STOP state, and ACTIVE DEMAND LIMIT to the lag or standby chiller as required for ice build, if configured to do so.
chilled water flowing. If the entering CHILLED WATER/BRINE TEMPERATURE increases above the ICE BUILD SETPOINT plus the RECYCLE DELTA T value, the compressor will restart and control the CHILLED WATER/BRINE TEMPERATURE to the ICE BUILD SETPOINT. Temperature Control During Ice Build During ice build, the capacity control algorithm uses the WATER/BRINE CONTROL POINT minus 5 F (2.7 C) to control the LEAVING CHILLED WATER temperature. The ECW OPTION and any temperature reset option are ignored during ice build.
3. Remote Contacts/Ice Level Input — Termination of compressor operation occurs when ICE BUILD TERMINATION is set to CONTACTS ONLY OPTION and the remote contacts are open. In this case, the contacts are provided for ice level termination control. The remote contacts can still be opened and closed to start and stop the chiller when the Ice Build Time Schedule is UNOCCUPIED. The contacts are used to stop the ICE BUILD mode when the Ice Build Time Schedule is OCCUPIED. 4.
Attach to Network Device Control On the Service menu, one of the selections is ATTACH TO NETWORK DEVICE. This table serves the following purposes: • to upload the Occupancy Schedule Number (if changed) for OCCPC03S, as defined in the Service01 table • to attach the LID to any CCN device, if the machine has been connected to a CCN Network. This may include other PIC controlled chillers. • to change to a new PSIO or LID module or upgrade software. Figure 23 illustrates the ATTACH TO NETWORK DEVICE table.
Attaching to Other CCN Modules If the machine PSIO has been connected to a CCN Network or other PIC controlled chillers through CCN wiring, the LID can be used to view or change parameters on the other controllers. Other PIC machines can be viewed and set points changed (if the other unit is in CCN control), if desired from this particular LID module. To view the other devices, move to the ATTACH TO NETWORK DEVICE table. Move the highlight bar to any device number.
Note: The LID will not automatically re-attach to the PSIO module on the machine. Press the ATTACH softkey to attach to LOCAL DEVICE and view the machine PSIO. Click here for Figure 23 — Example of Attach to Network Device Screen Service Operation An overview of the menu-driven programs available for Service Operation is shown in Figure 17. To Log On 1. On the Menu screen, press SERVICE. The keys now correspond to the numerals 1, 2, 3, 4. 2. Press the four digits of your password, one at a time.
The menu bar (Next-Previous-Select-Exit) is displayed to indicate that you have successfully logged on. NEXT PREVIOUS SELECT EXIT If the password is entered incorrectly, an error message is displayed. If this occurs, return to Step 1 and try logging on again. 1 INVALID PASSWORD 2 3 4 Note: The initial factory set password is 1-1-1-1. To Log Off Access the Log Out of Device table of the Service menu in order to password-protect the Service menu.
Holiday Scheduling (Figure 24) The time schedules may be configured for special operation during a holiday period. When modifying a time period, the ‘‘H’’ at the end of the days of the week field signifies that the period is applicable to a holiday. (See Figure 24.) The Broadcast function must be activated for the holidays configured in the Holidef tables to work properly. Access the Brodefs table in the Equipment Configuration table and answer ‘‘Yes’’ to the activated function.
2. If not logged on, follow the instructions for To Log On or To Log Off. Once logged on, press NEXT until Equipment Configuration is highlighted. NEXT PREVIOUS SELECT EXIT 3. Once Equipment Configuration is highlighted, press SELECT to access. NEXT PREVIOUS SELECT EXIT 4. Press NEXT until Holidef is highlighted. This is the Holiday Definition table.
5. Press SELECT to enter the Data Table Select screen. This screen lists 18 holiday tables. NEXT PREVIOUS SELECT EXIT 6. Press NEXT to highlight the holiday table that you wish to view or change. Each table is one holiday period, starting on a specific date, and lasting up to 99 days. NEXT PREVIOUS SELECT EXIT 7. Press SELECT to access the holiday table. The Configuration Select table now shows the holiday start month and day, and how many days the holiday period will last.
8. Press NEXT or PREVIOUS to highlight the month, day, or duration. NEXT PREVIOUS SELECT EXIT 9. Press SELECT to modify the month, day, or duration. NEXT PREVIOUS SELECT EXIT 10. Press INCREASE or DECREASE to change the selected value.
11. Press ENTER to save the changes. INCREASE DECREASE QUIT ENTER SELECT EXIT 12. Press EXIT to return to the previous menu.
Start-Up/Shutdown/Recycle Sequence (Figure 25) Local Start-Up Local start-up (or a manual start-up) is initiated by pressing the LOCAL menu softkey which is on the default LID screen. Local start-up can proceed when Time Schedule 01 is in OCCUPIED mode, and after the internal 15-minute start-to-start timer and the stop-to-start inhibit timer have expired. The chiller start/stop status point on the Status01 table may be overridden to start, regardless of the time schedule, in order to locally start the unit.
RECYCLE mode. If the water/brine temperature is high enough, the start-up sequence continues on to check the guide vane position. If the guide vanes are more than 6% open, the start-up waits until the PIC closes the vanes. If the vanes are closed, and the oil pump pressure is less than 4 psid (28 kPad), the oil pump relay will then be energized. The PIC then waits until the OIL PRESS (Pressure) VERIFY TIME (operator configured, default 15 seconds) for oil pressure to reach 18 psid (124 kPad).
Shutdown Sequence Shutdown of the machine can occur if any of the following events happen: • the STOP button is pressed for at least one second (the alarm light will blink once to confirm stop command) • recycle condition is present (see Chilled Water Recycle Mode section) • time schedule has gone into UNOCCUPIED mode • remote contact opens • the start/stop status is overridden to stop from the CCN network or the LID When a stop signal occurs, the shutdown sequence first stops the compressor by deactivatin
Certain conditions during shutdown will change this sequence: • • • if the COMPRESSOR MOTOR LOAD is greater than 10% after shutdown, or the starter contacts remain energized, the oil pump and chilled water pump remain energized and the alarm is displayed if the ENTERING CONDENSER WATER temperature is greater than 115 F (46 C) at shutdown, the condenser pump will be deenergized after the 1CR compressor start relay if the machine shuts down due to low refrigerant temperature, the chilled water pump will st
When the SOFT STOP AMPS THRESHOLD is being applied, a status message ‘‘SHUTDOWN IN PROGRESS, COMPRESSOR UNLOADING’’ is shown. Chilled Water Recycle Mode The machine may cycle off and wait until the load increases to restart again when the compressor is running in a lightly loaded condition. This cycling of the chiller is normal and is known as recycle.
is an operator-configured function which defaults to 5° F (3° C). This value is viewed/modified on the Service1 table. The compressor will restart when: in LCW CONTROL the LEAVING CHILLED WATER temperature is greater than the CONTROL POINT plus the RECYCLE RESTART DELTA T; or • in ECW CONTROL, the ENTERING CHILLED WATER temperature is greater than the CONTROL POINT plus the RECYCLE RESTART DELTA T Once these conditions are met, the compressor shall initiate a start-up, with a normal start-up sequence.
Safety Shutdown A safety shutdown is identical to a manual shutdown with the exception that the LID will display the reason for the shutdown, the alarm light will blink continuously, and the spare alarm contacts will be energized. A safety shutdown requires that the RESET softkey be pressed in order to clear the alarm. If the alarm is still present, the alarm light will continue to blink. Once the alarm is cleared, the operator must press the CCN or LOCAL softkeys to restart the machine.
Before Initial Start-Up Job Data Required • • • • • • list of applicable design temperatures and pressures (product data submittal) machine certified drawings starting equipment details and wiring diagrams diagrams and instructions for special controls or options 17/19EX Installation Instructions pumpout unit instructions Equipment Required • • • • • • mechanic’s tools (refrigeration) digital volt-ohmmeter (DVM) clamp-on ammeter electronic leak detector absolute pressure manometer or wet-bulb vacuum indi
Remove Shipping Packaging Remove any packaging material from the control center, power panel, guide vane actuator, motor cooling and oil reclaim solenoids, motor and bearing temperature sensor covers, and the factory-mounted starter. Open Drive Motor CAUTION ! CAUTION The motor may be provided with a shipping brace or shipping bolt (normally painted yellow) to prevent shaft movement during transit. It must be removed prior to operation. See Figure 27.
slushing compound on the shaft or other parts must be removed using a petroleum type solvent and observing proper safety precautions. Note: If the motor utilized a shipping bolt for restraining the rotor, the Westinghouse logo must be installed over the hole in the endcover. The logo, the gasket, and hardware can be found with the parts that have been shipped loose. (Usually these are packed inside of the main power lead box.
also be stated. If either is unknown, the correct sequence can be determined in the following manner: While the motor is uncoupled from the load, start the motor and observe the direction of rotation. Allow the motor to achieve full speed before disconnecting it from the power source. Refer to Open-Drive Motor Pre-Start Checks for information concerning initial start-up. If resulting rotation is incorrect, it can be reversed by interchanging any 2 incoming cables.
Open Oil Circuit Valves Check that the oil filter isolation valves are open by removing the valve cap and checking the valve stem. (See Scheduled Maintenance, Changing Oil Filter.) Torque All Gasketed Joints Gaskets normally have relaxed by the time the machine arrives at the jobsite. Tighten all gasketed joints to ensure a leak tight machine. Note: On open-drive machines, check the machine cold alignment. Refer to Machine Alignment in the Maintenance section.
prevent possible piping stress and damage during the transfer of refrigerant from vessel to vessel during the leak test process, or any time refrigerant is transferred. Adjust the springs when the refrigerant is in operating condition, and when the water circuits are full. Refrigerant Tracer Carrier recommends the use of an environmentally acceptable refrigerant tracer for leak testing with an electronic detector or halide torch. Ultrasonic leak detectors also can be used if the machine is under pressure.
1. If the pressure readings are normal for machine condition: a. Evacuate the nitrogen holding charge from the vessels, if present. b. Raise the machine pressure, if necessary, by adding refrigerant until pressure is at equivalent saturated pressure for the surrounding temperature. Follow the pumpout procedures in the Pumpout and Refrigerant Transfer Procedures section. WARNING ! WARNING Never charge liquid refrigerant into the machine if the pressure in the machine is less than 35 psig (241 kPa).
c. Plainly mark any leaks which are found. d. Release the pressure in the system. e. Repair all leaks. f. Retest the joints that were repaired. g. After successfully completing the test for large leaks, remove as much nitrogen, air, and moisture as possible, given the fact that small leaks may be present in the system. This can be accomplished by following the dehydration procedure, outlined in the Machine Dehydration section. h.
5. If no leak is found during initial start-up procedures, complete the transfer of refrigerant gas (see Pumpout and Refrigerant Transfer Procedures section.) 6. If no leak is found after a retest: a. Transfer the refrigerant to the utility vessel or other storage tank and perform a standing vacuum test as outlined in the Standing Vacuum Test section. b. If the machine fails this test, check for large leaks (Step 2b). c. Dehydrate the machine if it passes the standing vacuum test.
Standing Vacuum Test When performing the standing vacuum test, or machine dehydration, use a manometer or a wet bulb indicator. Dial gages cannot indicate the small amount of acceptable leakage during a short period of time. 1. Attach an absolute pressure manometer or wet bulb indicator to the machine. 2. Evacuate the vessel (see Pumpout and Refrigerant Transfer Procedures section) to at least 18 in. Hg vac, ref 30-in. bar (41 kPa), using a vacuum pump or the pump-out unit. 3.
Click here for Table 5A — HFC-134a Pressure — Temperature (F) Click here for Figure 28 — 17/19EX Leak Test Procedures Click here for Table 5B — HFC-134a Pressure — Temperature (C) Machine Dehydration Dehydration is recommended if the machine has been open for a considerable period of time, if the machine is known to contain moisture, or if there has been a complete loss of machine holding charge or refrigerant pressure.
Dehydration is readily accomplished at room temperatures. Use of a cold trap (Figure 29) may substantially reduce the time required to complete the dehydration. The higher the room temperature, the faster dehydration takes place. At low room temperatures, a very deep vacuum is required for boiling off any moisture. If low ambient temperatures are involved, contact a qualified service representative for the dehydration techniques required. Perform dehydration as follows: 1.
on the wet bulb vacuum indicator. At this temperature/pressure, isolated pockets of moisture can turn into ice. The slow rate of evaporation (sublimation) of ice at these low temperatures/pressures greatly increases dehydration time. 5. Valve off the vacuum pump, stop the pump, and record the instrument reading. 6. After a 2-hour wait, take another instrument reading. If the reading has not changed, dehydration is complete. If the reading indicates vacuum loss, repeat Steps 4 and 5. 7.
CAUTION ! CAUTION Water must be within design limits, clean, and treated to ensure proper machine performance and reduce the potential of tubing damage due to corrosion, scaling, or erosion. Carrier assumes no responsibility for chiller damage resulting from untreated or improperly treated water. Check Optional Pumpout Compressor Water Piping If the optional storage tank and/or pumpout system are installed, check to ensure the pumpout condenser water has been piped in.
Inspect Wiring WARNING ! WARNING Do not check voltage supply without proper equipment and precautions. Serious injury may result. Follow power company recommendations. CAUTION ! CAUTION Do not apply any kind of test voltage, even for a rotation check, if the machine is under a dehydration vacuum. Insulation breakdown and serious damage may result. 1. Examine wiring for conformance to job wiring diagrams and to all applicable electrical codes. 2.
4. The starter for a centrifugal compressor motor must contain the components and terminals required for PIC refrigeration control. Check certified drawings. 5. Check the voltage to the following components and compare to the nameplate values: oil pump contact, pumpout compressor starter, and power panel. 6. Be sure that fused disconnects or circuit breakers have been supplied for the oil pump, power panel, and pumpout unit. 7.
Check Insulation Resistance (Hermetic Motor) Test the machine compressor motor and its power lead insulation resistance with a 500-v insulation tester such as a megohmmeter. (Use a 5000-v tester for motors rated over 600 v.) Factory-mounted starters do not require a megohm test. 1. Open the starter main disconnect switch and follow lockout/tagout rules.
If the readings on a field-installed starter are unsatisfactory, repeat the test at the motor with the power leads disconnected. Satisfactory readings in this second test indicate the fault is in the power leads. Note: Unit-mounted starters do not have to be megohm tested. Check Insulation Resistance (Open-Drive Motor) Before operating voltages is applied to the motor, whether for checking rotation direction or for actual operation, the resistance of the stator winding insulation should be measured.
RM = Where RM = KV + 1 Recommended minimum insulation resistance in megohms at 104° F (40° C) of the entire winding. KV = Rated motor terminal to terminal voltage in kilovolts (1000 volts = 1 KV). On a new winding, where the contaminant causing low insulation resistance is generally moisture, drying the winding through the proper application of heat will normally increase the insulation resistance to an acceptable level. The following are several accepted methods for applying heat to a winding: 1.
entering the motor. Caution must be exercised, when heating the motor with any source of heat other than self contained space heaters, to raise the winding temperature at a gradual rate to allow any entrapped moisture to vaporize and escape without rupturing the insulation. The entire heating cycle should extend over 15 to 20 hours. Insulation resistance measurements can be made while the winding is being heated.
being rotated, and the oil rings should be viewed through the viewing ports in the top of the bearing housing to verify free ring rotation. 4. On fan-cooled motors, the area around he external fan inlet should be checked for loose debris that could be drawn into the fan during operation. 5. All external, factory-made, bolted joints should be checked for any looseness that may have occurred in transit. Refer to Table 6 for recommended bolt torques.
Note: Conductors and drain wire must be 20 AWG (American Wire Gage) minimum stranded, tinned copper. Individual conductors must be insulated with PVC, PVC/nylon, vinyl, Teflon, or polyethylene. An aluminum/polyester 100% foil shield and an outer jacket of PVC, PVC/nylon, chrome vinyl or Teflon with a minimum operating temperature range of –20 C to 60 C is required. See table below for cables that meet the requirements. Manufacturer Cable No.
Check Starter CAUTION ! CAUTION BE AWARE that certain automatic start arrangements can engage the starter. Open the disconnect ahead of the starter in addition to shutting off the machine or pump. Use the instruction and service manual supplied by the starter manufacturer to verify that the starter has been installed correctly. CAUTION ! CAUTION The main disconnect on the starter front panel may not deenergize all internal circuits.
Mechanical-Type Starters 1. Check all field wiring connections for tightness, clearance from moving parts, and correct connection. 2. Check the contactor(s) to be sure they move freely. Check the mechanical interlock between contactors to ensure that 1S and 2M contactors cannot be closed at the same time. Check all other electro-mechanical devices, e.g., relays, timers, for free movement. If the devices do not move freely, contact the starter manufacturer for replacement components. 3.
seconds may be chosen as needed (typically 20 to 30 seconds are used). When the timer has been set, check that the starter (with relay 1CR closed) goes through a complete and proper start cycle. Solid-State Starters WARNING ! WARNING This equipment is at line voltage when AC power is connected. Pressing the Stop button does not remove voltage. Use caution when adjusting the potentiometers on the equipment. 1. Check that all wiring connections are properly terminated to the starter. 2.
Oil Charge If oil is added, it must meet Carrier’s specification for centrifugal compressor usage as described in the Scheduled Maintenance, Oil Specification section. On hermetic machines, add oil through the oil drain charging valve (Figure 3, Item 26). A pump is required for adding oil against refrigerant pressure. The pumping device must be able to lift from 0 to 150 psig (0 to 1034 kPa) or above unit pressure.
power the heater and the control circuit. This set up allows the heater to energize when the main motor circuit breaker is off for service work or extended shutdowns. The oil heater relay status can be viewed on the Status02 screen on the LID. Oil sump temperature can be viewed on the LID default screen. Software Version The software version will always be labeled on the PSIO module, and on the back side of the LID module.
Input the Design Set Points Access the LID set point screen and view/modify the base demand limit set point, and either the LCW set point or the ECW set point. The PIC can control a set point to either the leaving or entering chilled water. This control method is set in the Equipment Configuration table, Config table. Input the Local Occupied Schedule (OCCPC01S) Access the schedule OCCPC01S screen on the LID and set up the occupied time schedule per the customer’s requirements.
Input Service Configurations The following configurations require the LID screen to be in the Service portion of the menu. • • • • • • • password input time and date LID configuration controller identification service parameters equipment configuration automated control test Password When accessing the Service tables, a password must be entered. All LIDs are initially set for a password of 1-1-1-1. This password may be changed in the LID configuration screen, if desired.
Change LID Configuration If Necessary The LID Configuration screen is used to view or modify the LID CCN address, change to English or SI units, and to change the password. If there is more than one machine at the jobsite, change the LID address on each machine so that each machine has its own address. Note and record the new address. Change the screen to SI units as required, and change the password if desired. A copy of the password should be retained for future reference.
Configure SERVICE1 Table Access Service1 table to modify/view the following to jobsite parameters: Chilled Medium Brine Refrigerant Trippoint Surge Limiting or Hot Gas Bypass Option Minimum Load Points (T1/P1) Maximum Load Points (T2/P2) Motor Rated Load Amps Motor Rated Line Voltage Motor Rated Line kW Line Frequency Compressor Starter Type Stop-to-Start Time* Water or Brine? Usually 3 ° F (1.
If, after configuring a value for these points, surge prevention is operating too soon or too late for conditions, these parameters should be changed by the operator. Example of configuration: Machine operating parameters Refrigerant used: HFC-134a Estimated Minimum Load Conditions: 44 F (6.7 C) LCW 45.5 F (7.5 C) EWC 43 F (6.1 C) Suction Temperature 70 F (21.1 C) Condensing Temperature Estimated Maximum Load Conditions: 44 F (6.7 C) LCW 54 F (12.2 C) ECW 42 F (5.6 C) Suction Temperature 98 F (36.
Suction Temperature: 42 F (5.6 C) = 37 psig (255 kPa) saturated refrigerant pressure (HFC-134a) Condensing Temperature: 98 F (36.7 C) = 120 psig (1827 kPa) saturated refrigerant pressure (HFC-134a) Maximum Load ∆T2: 54 – 44 = 10° F (12.2 – 6.7 = 5.5° C) Maximum Load ∆P2: 120 – 37 = 83 psid (827 – 255 = 572 kPad) To avoid unnecessary surge prevention, add about 10 psid (70 kPad) to ∆P2 from these conditions: ∆T2 = 10° F (5.
Calculate Minimum Load To calculate minimum load conditions, estimate the temperature difference that the cooler will have at 20% load, then estimate what the suction and condensing temperatures will be at this point. Use the proper saturated pressure and temperature for the particular refrigerant used. Suction Temperature: 43 F (6.1 C) = 38 psig (262 kPa) saturated refrigerant pressure (HFC-134a) Condensing Temperature: 70 F (21.
If surge prevention occurs too soon or too late: Load Surge Prevention Occurs Too Soon Surge Prevention Occurs Too Late At low loads (<50%) Increase P1 by 10 psid (70 kPad) Decrease P1 by 10 psid (70 kPad) At high loads (>50%) Increase P2 by 10 psid (70 kPad) Decrease P2 by 10 psid (70 kPad) Modify Equipment Configuration If Necessary The Equipment Configuration table has tables to select and view or modify. Carrier’s certified drawings will have the configuration values required for the jobsite.
Owner-Modified CCN Tables The following tables are described for reference only. Occdef Table Modifications — The Occdef tables contain the Local and CCN time schedules, which can be modified here, or in the Schedule screen as described previously. Holidef Table Modifications — The Holidef tables configure the days of the year that holidays are in effect. See the holiday paragraphs in the Controls section for more details.
that the value appearing on the LID is calibrated to the incoming power voltage reading. Voltage can be calibrated only to between 90 and 100 percent of rated line voltage. Perform an Automated Control Test Check the safety controls status by performing an automated controls test. Access the Control Test table and select the Automated Tests function (Table 7). The Automated Control Test will check all outputs and inputs for function. It will also set the refrigerant type.
When the test is finished, or the EXIT softkey is pressed, the test will be stopped and the Control Test menu will be displayed. If a specific automated test procedure is not completed, access the particular control test to test the function when ready. The Control Test menu is described as follows. Automated Tests PSIO Thermistors Options Thermistors Transducers Guide Vane Actuator Pumps Discrete Outputs Pumpdown/Lockout Terminate Lockout As described above, a complete control test.
Check Pumpout System Controls and Optional Pumpout Compressor Controls include an on/off switch, a 3-amp fuse, the compressor overloads, an internal thermostat, a compressor contactor, and a refrigerant high pressure cutout. The high pressure cutout is factory set to open at 161 psig (1110 kPa) and reset at 130 psig (896 kPa). Check that the water-cooled condenser has been connected. Loosen the compressor holddown bolts to allow free spring travel. Open the compressor suction and discharge service valves.
Charge Refrigerant into Machine CAUTION ! CAUTION The transfer, addition, or removal of refrigerant in spring isolated machines may place severe stress on external piping if springs have not been blocked in both up and down directions. The 17/19EX machine may have the refrigerant already charged in the utility vessels. If machine is not shipped fully charged, refrigerant is shipped separately to conform with transportation regulations.
the refrigerant charging valve, (Figure 7 and Figure 8) or to the pumpout charging connection. First evacuate the nitrogen holding charge from the vessels. Charge the refrigerant as a gas until the system pressure exceeds 35 psig (141 kPa). After the machine is beyond this pressure the refrigerant should be charged as a liquid until all of the recommended refrigerant charge has been added. Trimming Refrigerant Charge The 17/19EX is shipped with the correct charge for the design duty of the machine.
Initial Start-Up Preparation Before starting the machine, check that the: 1. Power is on to the main starter, oil pump relay, tower fan starter, oil heater relay, and the machine control center. 2. Cooling tower water is at proper level, and at or below design entering temperature. 3. Machine is charged with refrigerant and all refrigerant and oil valves are in their proper operating position. 4. Oil is at the proper level in the reservoir sight glasses. 5.
WARNING ! WARNING Do not permit water or brine that is warmer than 110 F (43 C) to flow through the cooler or condenser. Refrigerant overpressure may discharge through the relief devices and result in the loss of refrigerant charge. 8. Press RELEASE to automate the chiller start/stop value on the Status01 screen to enable the chiller to start. The initial factory setting of this value is overridden to stop in order to prevent accidental start-up.
3. Press ENTER to override the automatic target. The screen will now read a value of zero, and the word ‘‘SUPVSR!’’ will flash. 4. Press the SELECT softkey, and then press RELEASE softkey to release the vanes to AUTOMATIC mode. After a few seconds the ‘‘SUPVSR!’’ will disappear. Dry Run to Test Start-Up Sequence 1. Disengage the main motor disconnect on the starter front panel. This should only disconnect the motor power.
Check Rotation (Open-Drive Motor) Open Drive Motor Initial Start-Up Initial Uncoupled Start-Up The initial start-up of the motor should be made with the motor uncoupled. Verify that oil has been added to each bearing housing to the correct level. 1. If the motor is equipped with unidirectional fans (refer to the certified drawing) and verification of rotation direction is required, the following procedure should be followed: a. Start the motor and observe the rotation direction. b.
If the bearing temperature rises and motor operation appears to be normal, operation should continue until the bearing temperatures stabilize.
CAUTION ! CAUTION When the rate of bearing temperature rise is less than 2° F (1.1° C) per half-hour, the bearing temperature is considered to be stabilized. CAUTION ! CAUTION If the total bearing temperature exceeds 195 F (91 C), the motor should be shut down immediately. 3. Any abnormal noise or vibration should be immediately investigated and corrected.
Initial Coupled Start-Up After initial uncoupled start-up, the following steps should be taken to ensure safe coupled operation: 1. Follow the procedure stated in General Maintenance, Machine Alignment section to align the motor to the driven machine. 2. Prepare the coupling for operation in accordance with the coupling manufacturer’s instructions. Note any match marks on the couplings and assemble accordingly. For sleeve bearing motors, verify that the correct limited endfloat coupling has been installed.
5. Carefully observe the vibration of the bearing housing and any abnormal noise generator. Note that motor vibration may not be identical to the uncoupled values. If coupled vibration is excessive, recheck the mounting and alignment. 6. Carefully observe the bearing temperature rise and the movement of the oil ring. If the bearing temperature rise and motor operation appear normal, operation should continue until the bearing temperatures stabilize. 7. If possible, check the motor line currents for balance.
If the motor is of TEWAC (Totally Enclosed Water-to-Air Cooled) design, the maximum inlet water temperature and the water flow rate (GPM) at the air cooler must be as shown by the certified drawing. Otherwise, the discharge air temperature from the cooler (actually the ambient air for the motor as shown by the main nameplate) could be too high for the motor to properly cool. Check Rotation (Hermetic Motor) 1. Engage the main motor disconnect on the front of the starter panel.
CAUTION ! CAUTION Do not check motor rotation during coastdown. Rotation may have reversed during equalization of vessel pressures. Check Oil Pressure and Compressor Stop 1. When the motor is up to full speed, note the differential oil pressure reading on the LID default screen. It should be between 18 and 30 psid (124 to 206 kPad). 2. Press the Stop button and listen for any unusual sounds from the compressor as it coasts to a stop.
RLA by manually overriding the guide vane target value on the LID and setting the chilled water set point to a low value. Do not exceed 105% of the nameplate RLA. 3. When a steady motor current value in the desired range is met, compare the compressor motor amps value on the Status01 screen to the actual amps shown on the ammeter on the starter. Adjust the amps value on the LID to the actual value seen at the starter if there is a difference. Highlight the amps value then press SELECT.
Hot Alignment Check for Open-Drive Machines Alignment of compressor with heat exchangers, gear, and driver may be affected by the operating temperatures of the various components. When all machine components have reached operating temperature (after running near full load for 4 to 8 hours), make a hot alignment check. With the proper equipment and procedure, hot check can be made with either assembled or disassembled couplings. The procedures are detailed in the Maintenance section.
Check Machine Operating Condition Check to be sure that machine temperatures, pressures, water flows, and oil and refrigerant levels indicate that the system is functioning properly. Instruct the Customer Operator Check to be sure that the operator(s) understands all operating and maintenance procedures. Point out the various machine parts and explain their function as part of the complete system.
Motor Compressor Assembly Guide vane actuator, transmission, motor cooling system, oil cooling system, temperature and pressure sensors, oil sight glasses, integral oil pump, isolatable oil filter, extra oil and motor temperature sensors, synthetic oil, and compressor serviceability. Motor Compressor Lubrication System Oil pump, cooler filter, oil heater, oil charge and specification, operating and shutdown oil level, temperature and pressure, oil charging connections, and seal oil chambers.
Safety Devices and Procedures Electrical disconnects, relief device inspection, and handling refrigerant. Check Operator Knowledge Start, stop, and shutdown procedures, safety and operating controls, refrigerant and oil charging, and job safety. Review the Start-Up, Operation, and Maintenance Manual Operating Instructions Operator Duties 1. Become familiar with refrigeration machine and related equipment before operating the machine. 2.
Prepare the Machine for Start-Up Follow the steps described in the Initial Start-Up section. To Start the Machine 1. Start the water pumps, if they are not automatic. 2. On the LID default screen, press the LOCAL or CCN softkey to start the system. If the machine is in the OCCUPIED mode, and the 3- and 15-minute start timers have expired, the start sequence will start. Follow the procedure described in the Start-Up/Shutdown/ Recycle section.
At shutdown, oil level should be halfway in the lower sight glass. 4. The oil pressure should be between 18 and 30 psi (124 to 207 kPa) differential, as seen on the LID default screen. Typically the reading will be 18 to 25 psi (124 to 172 kPa) at initial start-up. 5. The moisture indicating sight glass on the refrigerant motor cooling line should indicate refrigerant flow and a dry condition. 6. The condenser pressure and temperature varies with the machine design conditions.
based on kW rate or temperature rate. It is accessed on the Equipment Configuration menu Config screen (Table 2, Example 5). 9. On open-drive machines, the oil pump will be energized once every 12 hours during shutdown periods to ensure that the shaft seal is filled with oil. To Stop the Machine 1. The occupancy schedule will start and stop the machine automatically once the time schedule is set up. 2.
After Limited Shutdown No special preparations should be necessary. Follow the regular preliminary checks and starting procedures. Control Power must be maintained in order to keep oil temperature hot and all control safeties operational. The oil pump on open-drive machines will operate occasionally to keep the contact seal filled with oil to prevent refrigerant loss.
Check the cooler pressure on the LID default screen, and compare to the original holding charge that was left in the machine. If (after adjusting for ambient temperature changes) any loss in pressure is indicated, check for refrigerant leaks. See Check Machine Tightness section. Recharge the machine by transferring refrigerant from the utility vessel. Follow the Pumpout and Refrigerant Transfer Procedures section. Observe freeze-up precautions.
fully closed, 100% is fully open. To release the guide vanes to AUTOMATIC mode, press the RELEASE softkey. Note: Manual control will increase the guide vanes and override the pulldown rate during startup. Motor current above the electrical demand setting, capacity overrides, and chilled water below control point will override the manual target and close the guide vanes. For descriptions of capacity overrides and set points, see the Controls section.
Pumpout and Refrigerant Transfer Procedures Preparation The 17/19EX may come equipped with an optional pumpout compressor. The refrigerant can be pumped for service work to either the cooler/condenser/compressor sections or the utility vessel by using the pumpout system. The following procedures are used to describe how to transfer refrigerant from vessel to vessel and perform machine evacuations. Operating the Optional Pumpout Compressor 1.
To Read Refrigerant Pressures during pumpout or leak testing: 1. The LID display on the machine control center is suitable for determining refrigerant-side pressures and low (soft) vacuum. For evacuation or dehydration measurement, use a quality vacuum indicator or manometer to ensure the desired range and accuracy. This can be placed on the Schrader connections on each vessel (Figure 7 and Figure 8) by removing the pressure transducer. 2. To determine utility vessel pressure, a 30 in.
Click here for Figure 33 — Pumpout Unit Wiring Schematic (19EX Shown) Click here for Figure 34 — Optional Pumpout Compressor Transferring Refrigerant from Normal Operation into the Utility Vessel These steps describe the method of moving refrigerant from the cooler/condenser/ compressor sections into the utility vessel. This is normally performed for service work on the cooler, condenser, or the compressor components or for long-term machine shutdown. 1.
d. When all liquid has been pushed into the utility vessel, close the cooler isolation valve 7. e. Access the Control Test, Pumpdown function on the LID display to turn on the machine water pumps and view the machine pressures. f. Turn off pumpout compressor. 2. Evacuate refrigerant gas from the cooler/condenser/compressor vessel. a. Valve positions: close valves 2 and 5, open valves 3 and 4. Valve Condition 1 2 3 C 4 5 C 6 7 8 9 10 11 C C C C C b. Turn on pumpout condenser water. c.
Transferring Refrigerant from Normal Operation into the Cooler/Condenser/ Compressor Section These steps describe the method of moving refrigerant from the utility vessel into the cooler/ condenser/compressor section. This is normally performed for service work on the utility vessel. 1. Isolate and push refrigerant into the cooler/condenser/compressor section: a. Valve positions: Valve Condition 1 2 3 4 C 5 C 6 7 8 9 10 11 C C C C b. Turn off machine water pumps and pumpout condenser water.
b. Valve positions: Close valves 3 and 4, open valves 2 and 5. Valve 1 2 Condition 3 4 C C 5 6 7 8 9 10 11 C C C C C c. Turn on pumpout condenser water. d. Run the pumpout compressor until the suction reaches 15 in. Hg (50 kPa abs). Monitor pressures on the LID and on refrigerant gages. e. Close valve 6. f. Turn off pumpout compressor. g. Close valves 1, 2, and 5 (all valves are now closed). h. Turn off pumpout condenser water. i.
Return Refrigerant to Normal Operating Conditions 1. Be sure that the vessel that was opened has been evacuated and dehydrated. 2. Access the Control Test, terminate lockout function to view vessel pressures and to turn on machine water pumps. 3. Open valves 1, 3, and 6. Valve 1 2 3 C Condition 4 5 C C 6 7 8 9 10 11 C C C C C 4. Slowly open valve 5, gradually increasing pressure in the evacuated vessel to 35 psig (141 kPa) for HFC-134a. Feed refrigerant slowly to prevent freezeup. 5.
9. Close valves 1, 3, 5, and 6. Valve 1 2 3 4 5 6 Condition C C C C C C 7 8 C 9 10 11 C 10. Continue on with the terminate lockout function on the LID to turn off water pumps and enable the compressor for operation.
General Maintenance Refrigerant Properties HFC-134a is the standard refrigerant in the 17/19EX. At normal atmospheric pressure, HFC-134a will boil at -14 F (-25 C) and must, therefore, be kept in pressurized containers or storage tanks. The refrigerant is practically odorless when mixed with air. This refrigerant is non-combustible at atmospheric pressure.
Adding Refrigerant Follow the procedures described in Charge Refrigerant into Machine section. WARNING ! WARNING Always use the compressor pumpdown function in the Control Test mode to turn on the evaporator pump and lock out the compressor when transferring refrigerant. Liquid refrigerant may flash into a gas and cause possible freeze-up when the machine pressure is below 30 psig (207 kPa) for HFC-134a.
Refrigerant Leak Testing Because HFC-134a is above atmospheric pressure at room temperature, leak testing can be performed with refrigerant in the machine. Use an electronic detector, soap bubble solution, or ultra-sonic leak detector. Be sure that the room is well ventilated and free from concentration of refrigerant to keep false readings to a minimum. Before making any necessary repairs to a leak, transfer all refrigerant from the leaking vessel.
WARNING ! WARNING HFC-134a MUST NOT be mixed with air or oxygen and pressurized for leak testing. In general, this refrigerant should not be allowed to be present with high concentrations of air or oxygen above atmospheric pressures, as the mixture can undergo combustion. Refrigerant Tracer Use an environmentally acceptable refrigerant as a tracer for leak test procedures.
pressure reaches test level. Do not exceed 140 psig (965 kPa). 5. Close the charging valve on the machine. Remove the copper tube if no longer required. Repair the Leak, Retest, and Apply Standing Vacuum Test After pressurizing the machine, test for leaks with an electronic leak detector, soap bubble solution, or an ultrasonic leak detector. Bring the machine back to atmospheric pressure, repair any leaks found, and retest.
Click here for Figure 35 — Electronic Vane Actuator Linkage Contact Seal Maintenance (Open-Drive Machines) (Refer to Figure 36) During machine operation, a few drops of oil per minute normally seeps through the space between the contact sleeve (Item 16) and the shaft locknut (Item 8). This oil slowly accumulates in an atmospheric oil chamber and is automatically returned to the system by a seal oil return pump. Oil should never leak between the contact sleeve and the packing gland (Item 14).
Seal Disassembly (Figure 36) Contact seal disassembly and repair should be performed only by well qualified compressor maintenance personnel. These disassembly instructions are included only as a convenient reference for the authorized serviceman. For ease of disassembly, refer to Figure 36 while following these instructions. 1. Remove refrigerant. 2. Remove shaft coupling and spacer (if any). 3. Remove screws holding windage baffle (Item 4) and remove baffle. 4.
11. Place contact sleeve in a protected area to avoid damage to lapped face. 12. Remove outer carbon ring (Item 17). Handle carefully. 13. Remove spray header (Item 3). 14. Use a spanner wrench to remove shaft nut (Item 8). 15. Remove shaft sleeve (Item 9) and contact ring key (Item 18). 16. Carefully remove contact ring (Item 19), avoiding a jammed or cocked position. If binding occurs, reinstall shaft sleeve and nut to free the ring. 17. Replace O-ring (Item 10) if damaged or deformed. 18.
Seal Reassembly (Figure 36) Be sure that all gasket surfaces are clean and that all holes, including oil holes, are properly aligned between gasket and mating flange. Coat gasket with oil-graphite mixture to prevent sticking. 1. Assembly guide-ring spring (Item 26) and guide-ring assembly (Items 20, 24 and 25). Check that travel of inner carbon seal ring (Item 20) is .06 in. minimum in each direction. 2. Install retaining ring (Item 21) and inner carbon ring key (Item 27).
9. Place outer spring (Item 15) over sleeve. 10. Separately assemble seal housing cover (Item 2), packing gland gasket (Item 13), packing gland (Item 14), and O-ring (Item 12). 11. Oil the contact sleeve and the O-ring and place the housing and gland assembly over the sleeve. 12. Carefully depress the spring until snap ring (Item 11) can be attached to the sleeve. 13. Position key (Item 6) to complete the bench assembly. 14. Install seal housing cover gasket (Item 1) and cover assembly on the compressor.
Machine Alignment (Open-Drive Machines) Alignment Methods There are several established procedures for aligning shafts. The dial indicator method is presented here since it is considered to be one of the most accurate and reliable. Another faster and easier method for alignment involves the use of laser alignment tools and computers. Follow the laser tool manufacturer’s guidelines when using the laser technique.
2. Follow the alignment sequence specified in the Near Final Alignment section. 3. All alignment work is performed on gear and drive equipment. Once the compressor is bolted in a perfectly level position and is piped to cooler and condenser, it must not be moved prior to hot check. 4. All alignment checks must be made with equipment holddown bolts tightened. 5. In setting dial indicators on zero and when taking readings, both shafts should be tight against their respective thrust bearings. 6.
Note: Drive shaft end-float at final drive position must not allow coupling hub faces to contact, or the coupling shroud to bind. Preliminary Alignment To get within dial indicator range, roughly align the equipment as shown in Figure 37 and as described below. Place a straight edge across the OD of one coupling to the OD of the other. Measure the gap between the straight edge and the OD of the second coupling with a feeler gage.
Near Final Alignment Once the machine components are within dial indicator range, the adjustments for misalignment should be made in a specific sequence. The four positions of alignment described below are arranged in the recommended order. 1. Angular in elevation — This alignment is adjusted with shims and is not readily lost in making the other adjustments. 2. Parallel in elevation — This alignment is also made with shims, but it cannot be made while there is angular misalignment in elevation.
3. Angular in plan —This position can easily be lost if placed ahead of the two adjustments in elevation. 4. Parallel in plan — This adjustment cannot be made while there is still angular misalignment in plan, and can easily be lost if elevation adjustments are made.
Correcting Angular Misalignment Preparation — Shaft angular misalignment is measured on the face of the coupling hubs or on brackets attached to each shaft (see Figure 38 and Figure 39). Brackets are preferred since they extend the diameter of the face readings. Attach a dial indicator to one coupling hub or shaft and place the indicator button against the face of the opposite hub. Position the indicator so that the plunger is at approximately midposition when the dial is set to zero.
Click here for Figure 39 — Measuring Angular Misalignment on Brackets Measurement — Occasionally, coupling faces may not be perfectly true, or may have been damaged in handling. To compensate for any such runout, determine the actual or ‘‘net’’ shaft misalignment as follows: Check the opening at the top and at the bottom of the coupling faces (or at each side when making plan adjustment). Rotate both shafts exactly 180 degrees and recheck the openings. Record the difference. (Example below is in inches.
or to a burr or other damage to the coupling face. If the larger opening remains the same, and remains on the same side, the amount is entirely shaft (net) misalignment. If the larger opening remains on the same side but changes amount, misalignment and runout are present. Add the two amounts and then divide by two to get the actual or net misalignment.
Adjustment — Having obtained the net misalignment, the amount by which the equipment must be moved can now be calculated. To determine: S — amount of movement (in plan) or the thickness of shim (in elevation) required. Obtain: D — coupling face diameter in inches (or indicator button circle) L — distance between front and rear holddown bolts (inches) M — net misalignment in inches And: Divide L, the bolt distance, by D, the coupling diameter. Multiply the result by M, the net misalignment.
If the larger opening between coupling faces is at the top, place .072 in. of shim under each rear foot or remove .072 in. from the front footings to bring the couplings into angular alignment in elevation. Tighten the holddown bolts and recheck the net misalignment. The height of the shaft above the footings and the distance the shaft extends beyond the equipment will not affect the calculations. Determine the angular adjustment in plan by the same method of calculation.
Click here for Figure 41 — Adjusting Angular Misalignment in Plan 5. Tighten the holddown bolts and recheck the indicator. If the reading has changed, loosen the three bolts and readjust. It may be necessary to over or undershoot the desired reading to allow for the effect of bolt tightening. Correcting Parallel Misalignment Preparation — Attach the dial indicator to one shaft or coupling hub and place the indicator button on the O.D. of the other hub.
points side to side in a similar manner when checking for misalignment in plan. Measurement — With dial set at zero in the top position, rotate the shaft to which the indicator is attached 180 degrees. If the dial reading is plus, the shaft on which the button rests is low. If the reading is minus, the shaft on which the button rests is high. Never accept a single reading. Look for repeatability. Rotate the shaft several times to see if the reading remains the same.
Final Alignment The procedures and tolerance requirements for final alignment are the same as those described in the Near Final Alignment section. Final alignment is performed just prior to grouting and machine hot check. All piping, including water and steam, must be completed, but the water and refrigerant charges need not be in place.
Disassembled Couplings 1. Shut down machine. 2. With machine hot, quickly disassemble couplings. 3. Check angular and parallel alignment in plan and elevation as described in the Near Final Alignment section. Record the indicator readings (see Initial Start-Up Checklist) and make necessary adjustments to bring alignment within .002 TIR and .00033 inches per in. of coupling face traverse (or in. of indicator swing). Follow procedures described in the Near Final Alignment section. 4.
Assembled Couplings If there is room on the shaft between coupling and component to clamp a sturdy bracket, the arrangement illustrated in Figure 43 may be used. The clamps must have room to rotate with the shaft. This method is quicker because the couplings do not have to be disassembled. In addition, eccentricity or coupling face runout are not problems since both shafts rotate together.
Doweling Techniques After hot alignment check has been completed, the compressor, gear and drive must be doweled to their soleplates. Doweling permits exact repositioning of components if they have to be moved. 1. Doweling must be completed with equipment at maximum operating temperature (full load). 2. Use no. 8 taper dowels to dowel compressor, gear and drive to the base. Use a 13/32-in. drill and no. 8 taper reamer with straight flutes. Drill pilot hole and then expand the pilot hole to final dimension.
Weekly Maintenance Check the Lubrication System Mark the oil level on the reservoir sight glass, and observe the level each week while the machine is shut down. If the level goes below the lower sight glass, the oil reclaim system will need to be checked for proper operation. If additional oil is required, add oil as follows: On hermetic machines, add oil through the oil drain charging valve (Figure 3, Item 26.) A pump is required for adding oil against refrigerant pressure.
off. The LID Status02 screen displays whether the heater is energized or not. If the PIC shows that the heater is energized, but the sump is not heating up, the power to the oil heater may be off or the oil level may be too low. Check the oil level, the oil heater contactor voltage, and oil heater resistance. The PIC will not permit compressor start-up if the oil temperature is too low. The control will continue with start-up only after the temperature is within limits.
Scheduled Maintenance Establish a regular maintenance schedule based on the actual machine requirements such as machine load, run hours, and water quality. The time intervals listed in this section are offered as guides to service only. Service Ontime The LID will display a SERVICE ONTIME value on the Status01 screen. This value should be reset to zero by the service person or the operator each time major service work is completed so that time between service can be viewed.
Check Safety and Operating Controls Monthly To ensure machine protection, the Control Test Automated Test should be done at least once per month. See Table 3 for safety control settings. Changing Oil Filter 19EX Compressors Change the oil filter on an annual basis or when the machine is opened for repairs. The 19EX compressor has an isolatable oil filter so that the filter may be changed with the refrigerant remaining in the machine. See Figure 44. Use the following procedure: 1.
indicated. Screw the assembly into the locking ring. 8. Evacuate the filter/piping assembly. 9. Open the isolation valves. FA Style Compressors 1. Turn off oil heater. 2. Close the line valve (Figure 44, Item 1) to isolate the oil filter(s). Note: FA STYLE COMPRESSORS DO NOT HAVE ISOLATION VALVE NO. 2, ONLY A CHECK VALVE. Vent the pressure in the oil filter by opening the Schrader valve on the oil filter housing. Run a hose from the valve to a bucket to catch the oil.
8. Turn on oil heater and warm the oil to 140 to 150 F (60 to 66 C). Operate the oil pump for 2 minutes. Add oil if required to keep level up to lower sight glass. Oil should be visible in the reservoir sight glass during all operating and shutdown conditions. Oil Specification If oil is to be added, it must meet the following Carrier specifications: • Oil Type for units using HFC-134a ............................................
To Change the Oil 1. Open the control and oil heater circuit breaker. 2. Drain the oil reservoir by opening the oil charging valve, (Figure 2, Item 18 or Figure 3, Item 26). Slowly open the valve against refrigerant pressure. 3. Change the oil filter at this time. See Changing Oil Filter section. 4. Change the refrigerant filter at this time, see the next section, Refrigerant Filter. 5. Charge the machine with oil.
vessel. A moisture indicating sight glass is located beyond this filter to indicate the volume and moisture in the refrigerant. If the dry-eye indicates moisture, locate the source of water immediately by performing a thorough leak check. Oil Reclaim Filter The oil reclaim system has a filter on the cooler scavenging line. Replace this filter once per year, or more often if filter condition indicates a need for more frequent replacement.
effects of overpressure. To ensure against damage to the equipment and possible injury to personnel, these devices must be kept in peak operating condition. As a minimum, the following maintenance is required. 1. At least once a year, disconnect the vent piping at the valve outlet and carefully inspect the valve body and mechanism for any evidence of internal corrosion or rust, dirt, scale, leakage, etc. 2. If corrosion or foreign material is found, do not attempt to repair or recondition.
spacer with 8 oz. of Kop-Flex KHP high performance coupling grease (Carrier Part No. 17DK 680 001). Install new gaskets. When the coupling assembly is removed for scheduled service of the carbon seal, replace the O-ring, spacer gaskets, and hex bolts. Operating conditions such as high temperatures or severe environments may require more frequent inspection and relubrication. Misalignment causes undue noise and wear. Check alignment yearly, or more often if vibration or heating occur.
repair, recondition, or rebuild the motor, it is recommended that the nearest Westinghouse apparatus repair facility be consulted. In addition to a daily observation of the appearance and operation of the motor, it is recommended that a general inspection procedure be established to periodically check the following items: 1. Cleanliness, both external and internal 2. Stator and rotor (squirrel-cage) windings 3.
air-to-air heat exchanger of TEAAC motors should be cleaned using a supplied tube brush having synthetic fiber bristles (not wire of any type). The standard cooler is equipped with steel tubes, however, in special cases aluminum tubes may be used and wire brushes can seriously erode the tube interiors over several cleanings. All tube brushing should be conducted from the front (fan end) toward the drive end of the motor such that dislodged dirt will not fall into the fan housing.
ducts through the stator core and by reducing heat transfer from the winding insulation surfaces to the cooling air. Conducting contaminants can change or increase electrical stresses on the insulation and corrosive contaminants can chemically attack and degrade the insulation. This may lead to shortened insulation life and failure. Several satisfactory methods of cleaning stator windings and stator cores are offered below: Compressed Air Low pressure (30 psi max.
solvent such as inhibited methyl chloroform may be used, but must be used sparingly and immediately removed. While this solvent is non-flammable under ordinary conditions, it is toxic and proper health and safety precautions should be followed while using it. Solvents of any type should never be used on windings provided with abrasion protection. Abrasion protection is a grey, rubber-like coating applied to the winding end-turns.
Sleeve Bearings Oil Changing The oil reservoirs of the self lubricated bearings should be drained and refilled every 6 months. More frequent changes may be needed if severe oil discoloration or contamination occurs. In conditions where contamination does occur, it may be advisable to flush the reservoir with kerosene to remove any sediment before new oil is added. Proper care must be taken to thoroughly drain the reservoir of the flushing material before refilling with the new oil.
The following is the recommended procedure for removing the bearing sleeve: 1. Remove the oil drain plug in the housing bottom and drain the oil sump. 2. Remove all instrumentation sensors that are in contact with the bearing sleeve. These would include resistance temperature detectors, thermocouples, temperature relay bulbs, thermometers, etc. 3. Remove the end cover. 4. Remove the socket head bolts holding the bearing cap and the inner air seal together at the horizontal split.
reassemble them to avoid any mix up in parts or damage to the surfaces at the partings. 7. When removing the labyrinth seals, make note of the position of the anti-rotation button located on the inside of the top half of the seal. Pull up the garter spring surrounding the floating labyrinth seal and carefully slip out the top half. Rotate the garter spring until the lock is visible.
WARNING ! WARNING Use extreme care when rolling out the lower bearing half. Keep the hands and fingers well clear of any position where they might be caught by the bearing half if it were accidentally released and rotated back to its bottom position. Serious personal injury could result. 10. Protect the shaft journal by wrapping it with clean, heavy paper or cardboard. Reassembly Bearing reassembly is basically a reversal of the disassembly procedures outlined above, with the following additional steps.
CAUTION ! CAUTION During the reassembly of the bearing parts, a thin layer of Curil-T should be applied to all gasketed and machined interface surfaces. This suggestion does not apply to the machined surfaces of the bearing liner halves. CAUTION ! CAUTION When seating the bearing shell, apply a thin layer of lube oil at the spherical surface of the liner. Slowly roll the lower bearing liner into the bearing housing making sure that the split surfaces of the liner and the housing are flush.
3. All parts should be carefully inspected for nicks, scratches, etc., in any contact surfaces. Such imperfections should be removed by an appropriate method such as stoning, scraping, filing, etc., followed by thorough cleaning. 4. Apply a few drops of oil to the journal and bearing saddles. 5. Roll the bottom half of the bearing into place and lower the shaft. 6. Before installing the floating labyrinth seal halves, observe their condition. Do not attempt to use a cracked or chipped seal.
straightness and make any corrections required. Do not force the ring halves together. Excessive force may alter the roundness or flatness of the ring which can change its oil delivery performance. Apply locking compound to the oil ring screws prior to reassembly. 10. Assemble the top half of the bearing liner making sure that the match marks on the liner halves align with one another. Failure to ensure alignment of match marks can cause misalignment and possible damage to bearings and journal surfaces.
CAUTION ! CAUTION Do not force bearing cap down. Damage could occur to the labyrinth seals. If the bearing cap does not seat completely, remove and reset the floating labyrinth seal position. When installing upper bearing cap the floating labyrinth seals sometimes rotate and the anti-rotation ‘‘tab’’ does not seat in its holder, thus preventing the bearing housing from seating properly. This procedure should be repeated until the bearing cap seats properly. 14. Reinstall the bearing housing split bolts.
Open-Drive Motor Handling/Rigging Each motor is provided with lifting lugs, welded to the four corners of the motor frame, for lifting the assembled machine. The motor should always be lifted by using the lifting lugs located on all four corners of the motor frame. (See Figure 46.) CAUTION ! CAUTION Spreader bars of adequate capacity and number must be used to avoid applying any pressure against the top air housing with the lifting plugs.
CAUTION ! CAUTION Uneven lifting must always be avoided. When single point lifting is to be used, slings of equal lengths must always be used to avoid uneven lifting. CAUTION ! CAUTION Under no circumstances should the motor be lifted using the shaft as an attachment point. Note: Refer to weights specified on certified drawing to determine proper lifting equipment required for specific components or assemblies.
should be energized at the voltage shown by the space heater nameplate attached to the motor. Incandescent light bulbs can be placed within the motor to provide heat. However, if used, they must not be allowed to come in contact with any parts of the motor because of the concentrated hot spot that could result.
Compressor Bearing and Gear Maintenance The key to good bearing and gear maintenance is proper lubrication. Use the proper grade of oil, maintained at recommended level, temperature, and pressure. Inspect the lubrication system regularly and thoroughly. Only a trained service technician should remove and examine the bearings. The bearings and gears should be examined on a scheduled basis for signs of wear.
Condenser Since this water circuit is usually an open-type system, the tubes may be subject to contamination and scale. Clean the condenser tubes with a rotary tube cleaning system at least once per year, and more often if the water is contaminated. Inspect the entering and leaving condenser water sensors for signs of slime, corrosion, or scale. Replace the sensor if corroded or remove any scale if found.
CAUTION ! CAUTION Hard scale may require chemical treatment for its prevention or removal. Consult a water treatment specialist for proper treatment. Water Leaks Water is indicated during machine operation by the refrigerant moisture indicator (Figure 2) on the refrigerant motor cooling line. Water leaks should be repaired immediately. CAUTION ! CAUTION Machine must be dehydrated after repair of water leaks. See Machine Dehydration section.
! CAUTION CAUTION Water must be within design flow limits, clean, and treated to ensure proper machine performance and reduce the potential of tubing damage due to corrosion, scaling, erosion, and algae. Carrier assumes no responsibility for chiller damage resulting from untreated or improperly treated water. Inspect the Starting Equipment Before working on any starter, shut off the machine, and open all disconnects supplying power to the starter.
WARNING ! WARNING Never open isolating knife switches while equipment is operating. Electrical arcing can cause serious injury. Inspect starter contact surfaces for wear or pitting on mechanical-type starters. Do not sandpaper or file silver-plated contacts. Follow the starter manufacturer’s instructions for contact replacement, lubrication, spare parts ordering, and other maintenance requirements.
Check Pressure Transducers Once a year, the pressure transducers should be checked against a pressure gage reading. Check all three transducers: oil pressure, condenser pressure, cooler pressure. Note the evaporator and condenser pressure readings on the Status01 screen on the LID. Attach an accurate set of refrigeration gages to the cooler and condenser Schrader fittings. Compare the two readings.
Oil should be visible in the compressor sight glass both during operation and at shutdown. Always check the oil level before operating the compressor. Before adding or changing oil, relieve the refrigerant pressure as follows: 1. Attach a pressure gage to the gage port of either compressor service valve (Figure 34). 2. Close the suction service valve and open the discharge line to the storage tank or the machine. 3. Operate the compressor until the crankcase pressure drops to 2 psig (13 kPa). 4.
Ordering Replacement Chiller Parts When ordering Carrier specified parts, the following information must accompany an order: • • • machine model number and serial number name, quantity, and part number of the part required delivery address and method of shipment Open-Drive Motor Renewal Parts Renewal parts information for the motor and any auxiliary devices can be obtained from the nearest Westinghouse Motor Company sales office.
Troubleshooting Guide Overview The PIC has many features to aid the operator and the technician in troubleshooting a 17/19EX machine. • • • • • By using the LID display, the chiller actual operating conditions can be viewed while the unit is running.
Checking the Display Messages The first area to check when troubleshooting the 17/19EX is the LID display. If the alarm light is flashing, check the primary and secondary message lines on the LID default screen (Figure 14). These messages will indicate where the fault is occurring. The Alarm History table on the LID Service menu will also carry an alarm message to further expand on this alarm. For a complete listing of messages, see Table 8.
Resistance Check Turn off the control power and disconnect the terminal plug of the sensor in question from the module. Measure sensor resistance between receptacles designated by the wiring diagram with a digital ohmmeter. The resistance and corresponding temperature is listed in Table 9A or Table 9B. Check the resistance of both wires to ground. This resistance should be infinite.
Check Sensor Accuracy Place the sensor in a medium of a known temperature and compare that temperature to the measured reading. The thermometer used to determine the temperature of the medium should be of laboratory quality with 0.5° F (.25° C) graduations. The sensor in question should be accurate to within 2° F (1.2° C). See Figure 7 and Figure 8 for sensor locations. The sensors are immersed directly in the refrigerant or water circuits.
Checking Pressure Transducers There are 3 pressure transducers on hermetic machines. These determine cooler, condenser, and oil pressure. Open-drive machines have 4 transducers. These transducers sense cooler pressure, condenser pressure, oil supply pressure, and oil sump pressure. The oil supply pressure and the oil transmission sump pressure difference is calculated by a differential pressure power supply module on open-drive machines. The PSIO then reads this differential.
To calibrate oil pressure differential on open-drive machines, refer to Oil Pressure Differential Calibration at the end of this section. Calibration can be checked by comparing the pressure readings from the transducer against an accurate refrigeration gage. These readings are all viewed or calibrated from the Status01 table on the LID. The transducer can be checked and calibrated at 2 pressure points. These calibration points are 0 psig (0 kPa) and between 240 and 260 psig (1655 to 1793 kPa).
from the transducer by the supply voltage signal, measured at the PSIO terminals J7-J34 and J7-J35. For example, the condenser transducer voltage input is measured at PSIO terminals J7-1 and J7-2. The voltage ratio must be between 0.80 vdc and 0.11 vdc for the software to allow calibration. Pressurize the transducer until the ratio is within range. Then attempt calibration again. 4.
Oil Differential Pressure/Power Supply Module Calibration (See Figure 48.) The oil reservoir in the 17EX machine is not common to cooler pressure. Therefore, a comparison of pump output to cooler pressure could not be used to provide differential oil pressure information. A different method has been developed. Oil transmission sump pressure and oil supply pressure are fed to a comparator circuit on a 5V power supply board.
Troubleshooting Transducers When troubleshooting transducers, keep the negative lead of your voltohmmeter on terminal U4 of the power supply (or terminal 4 on power supplies without the comparator circuit). voltage VO1 = (VH1-VL1) + .467 ± .1 V For all PIC transducers: Measured pressure = (507.97 × (Vout /Vin)) -47.33 V V out in = transducer output ref. to neg. terminal (4 or U4) i.e., VH1 to U4 or VL1 to U4 = power supply output, i.e.
Control Algorithms Checkout Procedure In the LID Service menu, one of the tables is Control Algorithm Status. This table contains 6 tables that may be viewed in order to see how the particular control algorithm is operating. MAINT01 Capacity Control MAINT02 Override Status MAINT03 Surge/HGBP Status MAINT04 OCCDEFM LEAD/LAG Status Time Schedules Status WSMDEFME Water System Manager Status This table shows all values that are used to calculate the chilled water/brine control point.
Control Test The Control Test feature can check all of the thermistor temperature sensors, including those on the Options modules, pressure transducers, pumps and their associated flow switches, the guide vane actuator, and other control outputs, such as hot gas bypass. The tests can help to determine whether a switch is defective, or a pump relay is not operating, among other useful troubleshooting tests.
Click here for Table 8C — In Recycle Shutdown Click here for Table 8D — Pre-Start Alerts Click here for Table 8E — Normal or Auto.
Click here for Table 8I — Normal Run Overrides Active (Alerts) Click here for Table 8J — Out-of-Range Sensor Failures Click here for Table 8K — Machine Protect Limit Faults Click here for Table 8L — Machine Alerts Click here for Table 8M — Spare Sensor Alert Messages Click here for Table 8N — Other Problems/Malfunctions
Click here for Table 9A — Thermistor Temperature (F) vs Resistance/Voltage Drop Click here for Table 9B — Thermistor Temperature (C) vs Resistance/Voltage Drop Control Modules CAUTION ! CAUTION Turn controller power off before servicing controls. This ensures safety and prevents damage to controller.
Red LED If the LED is blinking continuously at a 2-second rate, it is indicating proper operation. If it is lit continuously it indicates a problem requiring replacement of the module. Off continuously indicates that the power should be checked. If the red LED blinks 3 times per second, a software error has been discovered and the module must be replaced. If there is no input power, check fuses and the circuit breaker.
PSIO Module Green LED Closest to Communications Connection — Communication with SMM and 8input module; must blink continuously. Other Green LED — Communication with LID; must blink every 3 to 5 seconds. 8-Input Modules and SMM Green LED — Communication with PSIO module; will blink continuously.
Notes on Module Operation 1. The machine operator monitors and modifies configurations in the microprocessor through the 4 softkeys and the LID. Communication with the LID and the PSIO is accomplished through the CCN bus. The communication between the PSIO, SMM, and both 8-input modules is accomplished through the sensor bus, which is a 3-wire cable. On sensor bus terminal strips, Terminal 1 of PSIO module is connected to Terminal 1 of each of the other modules.
If all modules indicate communications failure, check communications plug on the PSIO module for proper seating. Also check the wiring (CCN bus — 1:red, 2:wht, 3:blk; Sensor bus — 1:red, 2:blk, 3:clr/wht). If a good connection is assured and the condition persists, replace the PSIO module. If only one 8-input module or SMM indicates communication failure, check the communications plug on that module. If a good connection is assured and the condition persists, replace the module.
Processor Module (PSIO) (Figure 51) Inputs Each input channel has 3 terminals; only 2 of the terminals are used. Application of machine determines which terminals are normally used. Always refer to individual unit wiring for terminal numbers. Outputs Output is 20 vdc. There are 3 terminals per output, only 2 of which are used, depending on the application. Refer to the unit wiring diagram.
Starter Management Module (SMM) (Figure 52) Inputs Inputs on strips J2 and J3 are a mix of analog and discrete (on/off) inputs. Application of the machine determines which terminals are used. Always refer to the individual unit wiring diagram for terminal numbers. Outputs Outputs are 24 vdc and wired to strip J1. There are 2 terminals used per output.
Options Modules (8-Input) The options modules are optional additions to the PIC, and are used to add temperature reset inputs, spare sensor inputs, and demand limit inputs. Each option module contains 8 inputs, each input meant for a specific duty. See the wiring diagram for exact module wire terminations. Inputs for each of the options modules available include the following: Options Module 1 4 to 20 mA Auto. Demand Reset 4 to 20 mA Auto.
Terminal block connections are provided on the options modules. All sensor inputs are field wired and installed. Options module 1 can be factory or field-installed. Options module 2 is shipped separately and must be field installed. For installation, refer to the unit or field wiring diagrams. Be sure to address the module for the proper module number (Figure 53) and to configure the chiller for each feature being used.
Installation of New PSIO Module 1. Verify if the existing PSIO module is defective, by using the procedure described in the Notes on Module Operation section, and Control Modules section. Do not select the Attach to Network Device table if the LID displays communication failure. 2. Data regarding the PSIO configuration should have been recorded and saved. This data will have to be reconfigured into the LID.
5. Package the defective module in the carton of the new module for return to Carrier. 6. Restore control system power (LID will show ‘‘COMMUNICATION FAILURE’’ at bottom of screen). 7. Access the SERVICE menu. Highlight and select ‘‘ATTACH TO NETWORK DEVICE.’’ Push the ‘‘ATTACH’’ softkey. (The LID will show ‘‘UPLOADING TABLES. PLEASE WAIT,’’ then show ‘‘COMMUNICATION FAILURE.’’) Press the EXIT softkey. 8. Turn off control power. 9.
14. After the PSIO tables have been uploaded into the LID, access the STATUS01 screen. Move the highlight bar to the ‘‘TOTAL COMPRESSOR STARTS’’ value. Select this value and increase the value until it is the same as the value from the old module. Press ENTER to save this value. 15. Move the highlight bar to the ‘‘COMPRESSOR ONTIME’’ value. Select this point and increase the value until it matches the old module run hours. Press SELECT to save this value. 16.
17/19EX Physical Data and Wiring Schematics Table 10, Table 11, Table 12, Table 13, Table 14, Table 15, Table 16, Table 17, Table 18, Figure 54, Figure 55, Figure 56, Figure 57, Figure 58, Figure 59, Figure 60, Figure 61, and Figure 62 provide additional information regarding compressor fits and clearances, physical and electrical data, and wiring schematics for operator convenience during troubleshooting.
Click here for Table 13 — Additional Cooler Weights Click here for Table 14 — Marine Waterbox Cover Weights Click here for Table 15 — NIH Waterbox Cover Weights Click here for Table 16 — Auxiliary Systems, Electrical Data Compressor Fits and Clearances Service and repair of Carrier centrifugal compressors should be performed only by fully trained and qualified service personnel.The information in this section is included as a reference for such personnel only.
Click here for Table 17 — Open-Drive Compressor Fits and Clearances Click here for Figure 56 — Hermetic Compressor Fits and Clearances Click here for Table 18 — Hermetic Compressor Fits and Clearances Click here for Figure 57 — Electronic PIC Controls Wiring Schematic — Hermetic Machine Click here for Figure 58 — Electronic PIC Controls Wiring Schematic — Open-Drive Machine Click here for Figure 59 — Machine Power Panel, Starter Assembly, and Motor Wiring Schematic
Click here for Figure 60 — Hermetic Drive — Power Panel With Water-Cooled Oil Cooler Click here for Figure 61 — Hermetic Drive — Power Panel With Motor Cooling Solenoid Click here for Figure 62 — Open Drive — Power Panel Click here for Initial Start-Up Checklist for 17/19EX Centrifugal Liquid Chiller
Table 1 — Major PIC Components and Panel Locations* PIC Component Panel Location Processor Sensor Input/Output Module (PSIO) Control Center Starter Management Module (SMM) Starter Cabinet Local Interface Device (LID) Control Center 6-Pack Relay Board Control Center 8-Input Modules (Optional) Control Center Oil Differential Pressure/Power Supply Module Control Center Oil Heater Contactor (1C) Power Panel Oil Pump Contactor (2C) Power Panel Hot Gas Bypass Relay (3C) (Optional) Power Panel
Table 2 — LID Screens Notes: 1. Only 12 lines of information appear on the LID screen at any given time. Press NEXT or PREVIOUS to highlight a point or to view points below or above the current screen. 2. The LID may be configured in English or SI units, as required, through the LID configuration screen. 3. Data appearing in the Reference Point Names column is used for CCN operations only. Example 1 — Status01 Display Screen To access this display from the LID default screen: 1. Press MENU. 2.
Table 2, Example 1 — Status01 Display Screen (Continued) Reference Point Name (Alarm History) Description Range Units Entering Chilled Water Leaving Chilled Water Entering Condenser Water Leaving Condenser Water Evaporator Refrig Temp Evaporator Pressure Condenser Refrig Temp Condenser Pressure Discharge Temperature Bearing Temperature Motor Winding Temp† Motor Winding Hi Temp Cutout** Oil Sump Temperature Oil Pressure Transducer† Oil Pressure†† Line Voltage: Percent Actual *Remote Contacts Input Total
Example 2 — Status02 Display Screen To access this display from the LID default screen: 1. Press MENU. 2. Press STATUS. 3. Scroll down to highlight STATUS02. 4. Press SELECT.
Example 3 — Status03 Display Screen To access this display from the LID default screen: 1. Press MENU. 2. Press STATUS. 3. Scroll down to highlight STATUS03. 4. Press SELECT.
Example 4 — Setpoint Display Screen To access this display from the LID default screen: 1. Press MENU. 2. Press SETPOINT. Table 2, Example 4 — Setpoint Display Screen Description Configurable Range Units Reference Point Name Default Value Base Demand Limit LCW Setpoint ECW Setpoint ICE BUILD Setpoint 40-100 20-120 (–6.7-48.9) 20-120 (–6.7-48.9) 20-60 (–6.7-15.6) % DEG F (DEG C) DEG F (DEG C) DEG F (DEG C) DLM lcw sp ecw sp ice sp 100 50.0 (10.0) 60.0 (15.6) 40.0 ( 4.
Example 5 — Configuration (Config) Display Screen To access this display from the LID default screen: 1. Press MENU. 2. 3. 4. 5. Press SERVICE. Scroll down to highlight EQUIPMENT CONFIGURATION. Press SELECT. Scroll down to highlight CONFIG. 6. Press SELECT.
Example 6 — Lead/Lag Configuration Display Screen To access this display from the LID default screen: 1. Press MENU. 2. Press SERVICE. 3. Scroll down to highlight EQUIPMENT CONFIGURATION. 4. Press SELECT. 5. Scroll down to highlight Lead/Lag. 6. Press SELECT.
Example 7 — Service1 Display Screen To access this display from the LID default screen: 1. Press MENU. 2. Press SERVICE. 3. Scroll down to highlight EQUIPMENT SERVICE. 4. Press SELECT. 5. Scroll down to highlight SERVICE1. 6. Press SELECT.
Table 2, Example 7 — Service1 Display Screen (Continued) Description Demand Limit Source Select: Amps=0, Load=1 Amps Correction Factor Motor Rated Load Amps Motor Rated Line Voltage Meter Rated Line KW Line Frequency Select: 0=60 Hz, 1=50 Hz Compr Starter Type Condenser Freeze Point Soft Stop Amps Threshold Stop to Start Timer† Configurable Range Units 0/1 Reference Point Name Default Value dem src 0 1-8 1-9999 1-9999 1-9999 0/1 AMPS VOLTS kW HZ corfact a fs v fs kw fs freq 3 200 460 600 0 REDUC
Example 8 — Service2 Display Screen To access this display from the LID default screen: 1. Press MENU. 2. Press SERVICE. 3. Scroll down to highlight EQUIPMENT SERVICE. 4. Press SELECT. 5. Scroll down to highlight SERVICE2. 6. Press SELECT.
Table 2, Example 8 — Service2 Display Screen (Continued) Description OPTIONS BOARD 2 20 mA POWER CONFIGURATION External = 0, Internal = 1 SPARE 1 20 mA Power Source SPARE 2 20 mA Power Source SPARE ALERT ENABLE Disable = 0, 1 = High Alert, 2 = Low Alert, 3 = High Alarm, 4 = Low Alarm Temp = Alert Threshold Spare Temp 4 Enable Spare Temp 4 Alert Spare Temp 5 Enable Spare Temp 5 Alert Spare Temp 6 Enable Spare Temp 6 Alert Spare Temp 7 Enable Spare Temp 7 Alert Spare Temp 8 Enable Spare Temp 8 Alert Spare Tem
Example 9 — Service3 Display Screen To access this display from the LID default screen: 1. Press MENU. 2. Press SERVICE. 3. Scroll down to highlight EQUIPMENT SERVICE. 4. Press SELECT. 5. Scroll down to highlight SERVICE3. Table 2, Example 9 — Service3 Display Screen Description Configurable Range Proportional Inc Band Proportional Dec Band Proportional ECW Gain 2-10 2-10 1-3 Guide Vane Travel Limit 30-100 Units % Reference Point Name Default Value gv inc gv de gv ecw 6.5 6.0 2.
Example 10 — Maintenance (Maint01) Display Screen To access this display from the LID default screen: 1. Press MENU. 2. Press SERVICE. 3. Scroll down to highlight ALGORITHM STATUS. 4. Press SELECT. 5. Scroll down to highlight MAINT01.
Example 11 — Maintenance (Maint02) Display Screen To access this display from the LID default screen: 1. Press MENU. 2. Press SERVICE. 3. Scroll down to highlight CONTROL ALGORITHM STATUS. 4. Press SELECT. 5. Scroll down to highlight MAINT02. 6. Press SELECT.
Example 12 — Maintenance (Maint03) Display Screen To access this display from the LID default screen: 1. Press MENU. 2. Press SERVICE. 3. Scroll down to highlight CONTROL ALGORITHM STATUS. 4. Press SELECT. 5. Scroll down to highlight MAINT03. 6. Press SELECT.
Example 13 — Maintenance (Maint04) Display Screen To access this display from the LID default screen: 1. Press MENU. 2. Press SERVICE. 3. Scroll down to highlight CONTROL ALGORITHM STATUS. 4. Press SELECT. 5. Scroll down to highlight MAINT04. 6. Press SELECT.
Table 3 — Protective Safety Limits and Control Settings Monitored Parameter Limit Applicable Comments Temperature Sensors Out Of Range –40 to 245 F (–40 to 118.3 C) Must be outside range for 2 seconds Pressure Transducers Out Of Range 0.08 to 0.98 Voltage Ratio Must be outside range for 2 seconds. Ratio = Input Voltage ÷ Voltage Reference Compressor Discharge Temperature >220 F (104.4 C) Preset, alert setting configurable Motor Winding Temperature >220 F (104.
Table 3 — Protective Safety Limits and Control Settings (Continued) Monitored Parameter Limit Applicable Comments Starter Acceleration Time (Determined by inrush current going below 100% compressor motor load) >45 seconds For machines with reduced voltage mechanical and solid-state starters >10 seconds For machines with full voltage starters (Configured on Service1 table) Starter Transition >75 seconds Reduced voltage starters only CONDENSER FREEZE POINT configured in Service01 table with a defaul
Table 4 — Capacity Overrides First Stage Setpoint Override Capacity Control View/ Modify on LID Screen Second Stage Setpoint Override Termination Default Value Configurable Range Value Value High Condenser Pressure Equipment Service1 125 psig (862 kPa) 90 to 200 psig (620-1379 kPa) >Override Set Point + 4 psid (28 kPad) 200 F (93.
Table 5A — HFC-134a Pressure — Temperature (F) Temperature (F) Pressure (psi) 0 2 4 6 8 6.50 7.52 8.60 9.66 10.79 10 12 14 16 18 11.96 13.17 14.42 15.72 17.06 20 22 24 26 28 18.45 19.88 21.37 22.90 24.48 30 32 34 36 38 26.11 27.80 29.53 31.32 33.17 40 42 44 46 48 35.08 37.04 39.06 41.14 43.28 50 52 54 56 58 45.48 47.74 50.07 52.47 54.93 60 62 64 66 68 57.46 60.06 62.73 65.47 68.29 70 72 74 76 78 71.18 74.14 77.18 80.30 83.49 80 82 84 86 88 86.17 90.13 93.57 97.09 100.
Table 5A — HFC-134a Pressure — Temperature (F) (Continued) Temperature (F) Pressure (psi) 90 92 94 96 98 104.40 108.18 112.06 116.02 120.08 100 102 104 106 108 124.23 128.47 132.81 137.25 141.79 110 112 114 116 118 146.43 151.17 156.01 160.96 166.01 120 122 124 126 128 171.17 176.45 181.83 187.32 192.93 130 132 134 136 138 140 198.66 204.50 210.47 216.55 222.76 229.
Table 5B — HFC-134a Pressure — Temperature (C) Temperature (C) Pressure (kPa) -18.0 -16.7 -15.6 -14.4 -13.3 44.8 51.9 59.3 66.6 74.4 -12.2 -11.1 -10.0 -8.9 -7.8 82.5 90.8 99.4 108.0 118.0 -6.7 -5.6 -4.4 -3.3 -2.2 127.0 137.0 147.0 158.0 169.0 -1.1 0.0 1.1 2.2 3.3 180.0 192.0 204.0 216.0 229.0 4.4 5.0 5.6 6.1 6.7 242.0 248.0 255.0 261.0 269.0 7.2 7.8 8.3 8.9 9.4 276.0 284.0 290.0 298.0 305.0 10.0 11.1 12.2 13.3 14.4 314.0 329.0 345.0 362.0 379.0 15.6 16.7 17.8 18.9 20.0 396.0 414.0 433.
Table 5B — HFC-134a Pressure — Temperature (C) (Continued) Temperature (C) Pressure (kPa) 26.7 27.8 28.9 30.0 31.1 598.0 621.0 645.0 669.0 694.0 32.2 33.3 34.4 35.6 36.7 720.0 746.0 773.0 800.0 828.0 37.8 38.9 40.0 41.1 42.2 857.0 886.0 916.0 946.0 978.0 43.3 44.4 45.6 46.7 47.8 1010.0 1042.0 1076.0 1110.0 1145.0 48.9 50.0 51.1 52.2 53.3 1180.0 1217.0 1254.0 1292.0 1330.0 54.4 55.6 56.7 57.8 58.9 60.0 1370.0 1410.0 1451.0 1493.0 1536.0 1580.
Table 6 — Recommended Torque Bolt size 1/4” 5/16” 3/8” 1/2” 5/8” 3/4” 7/8” 1” 1 1/3” 1 1/2” SAE GR 5 Grade Ft-lbs 3.5 7 12 31 63 115 180 275 550 960 N•m 4.7 9.5 16 42 85 156 244 373 746 1302 M4 M6 Torque* Bolt size M8 Torque* N•m M12 M10 DIN 8.8 Grade Ft-lbs M10 M12 M16 DIN 12.9 2 8 15 35 65 45 92 225 2.7 11 20 47 88 61 125 305 * Torque values based upon dry friction.
Table 7 — Control Test Menu Functions Tests To Be Performed Devices Tested 1. Automated Tests* Operates the second through seventh tests 2. PSIO Thermistors Entering chilled water Leaving chilled water Entering condenser water Leaving condenser water Discharge temperature Bearing temperature Motor winding temperature Oil sump temperature 3.
Table 7 — Control Test Menu Functions (Continued) Tests To Be Performed Devices Tested 7. Discrete Outputs All outputs or individual outputs may be energized: Hot gas bypass relay Oil heater relay Motor cooling relay** Tower fan relay Alarm relay Shunt trip relay 8.
LEGEND For Table 8, A - N 1CR AUX — Compressor Start Contact OILPD — Oil Pressure CA P — Compressor Current OILT — Oil Sump Temperature CDFL — Condenser Water Flow PIC — Product Integrated Control CHIL S S — Chiller Start/Stop PRS TRIP — Pressure Trip Contact CMPD — Discharge Temperature PSIO — Processor Sensor Input/Output Module CRP — Condenser Pressure RLA — Rated Load Amps ERT — Evaporator Refrigerant Temperature RUN AUX — Compressor Run Contact EVFL — Chilled Water Flow SM
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides B. Timing Out or Timed Out Primary Message Secondary Message Probable Cause/Remedy Ready To Start In XX Min Unoccupied Mode Time schedule for PIC is unoccupied. Machines will start only when occupied. Ready To Start In XX Min Remote Contacts Open Remote contacts have stopped machine. Close contacts to start.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides C. In Recycle Shutdown Primary Message Secondary Message Probable Cause/Remedy Recycle Restart Pending Occupied Mode Unit in recycle mode, chilled water temperature is not high enough to start. Recycle Restart Pending Remote Contact Closed Unit in recycle mode, chilled water temperature is not high enough to start.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides D. Pre-Start Alerts: These alerts only delay start-up. When alert is corrected, the start-up will continue. No reset is necessary. Primary Message Secondary Message Alarm Message/Primary Cause Starts Limit Exceeded STARTS EXCESSIVE Compressor Starts (8 in 12 hours) Depress the RESET softkey if additional start is required. Reasses start-up requirements.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides E. Normal or AUTO.-RESTART Primary Message Secondary Message Probable Cause/Remedy Startup in Progress Occupied Mode Machine starting. Time schedule is occupied. Startup in Progress Remote Contact Closed Machine starting. Remote contacts are closed. Start Command In Effect Machine starting. Chiller START/STOP on Status01 manually forced to start.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides F. Start-Up Failures: This is an alarm condition. A manual reset is required to clear. Primary Message Secondary Message Alarm Message/Primary Cause Additional Cause/Remedy Failure To Start Low Oil Pressure OILPD [VALUE] exceeded limit of [LIMIT]*. Check oil pump system. Check for closed oil supply valves. Check oil filter. Check for low oil temperature. Check transducer accuracy.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides F. Start-Up Failures: This is an alarm condition. A manual reset is required to clear. (Continued) Primary Message Failure To Start Failure To Start Failure To Start Failure To Start Failure To Start Secondary Message Alarm Message/Primary Cause Starter Transition Fault RUN AUX Starter Transition Fault: Check 1CR/1M/Interlock mechanism. Check starter for proper operation.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides G. Compressor Jumpstart and Refrigerant Protection Primary Message Secondary Message Alarm Message/Primary Cause Unit Should Be Stopped CA P Emergency: Compressor running without control authorization. Compressor is running with more than 10% RLA and control is trying to shut it down. Throw power off to compressor if unable to stop. Determine cause before repowering.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides H. Normal Run with Reset, Temperature, Or Demand Primary Message Secondary Message Running — Reset Active 4-20MA Signal Running — Reset Active Remote Sensor Control Running — Reset Active CHW Temp Difference Running — Temp Control Leaving Chilled Water Default method of temperature control. Running — Temp Control Entering Chilled Water ECW control activated on Config table.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides I. Normal Run Overrides Active (Alerts) Alarm Message/Primary Cause Primary Message Secondary Message Run Capacity Limited High Condenser Pressure CRP [VALUE] exceeded limit of [LIMIT]*. Condenser pressure override. Run Capacity Limited High Motor Temperature MTRW [VALUE] exceeded limit of [LIMIT]*. Motor temperature override.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides J. Out-of-Range Sensor Failures Primary Message Secondary Message Alarm Message/Primary Cause Sensor Fault Leaving CHW Temperature Sensor Fault: Check leaving CHW sensor. Sensor Fault Entering CHW Temperature Sensor Fault: Check entering CHW sensor. Condenser Pressure Sensor Fault: Check condenser pressure transducer. Evaporator Pressure Sensor Fault: Check evaporator pressure transducer.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides K. Machine Protect Limit Faults WARNING ! WARNING Excessive numbers of the same fault can lead to severe machine damage. Seek service expertise. Primary Message Secondary Message Alarm Message/ Primary Cause High Discharge Temp CMPD [VALUE] exceeded limit of [LIMIT]*. Check discharge temperature. Check discharge temperature immediately.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides K. Machine Protect Limit Faults (Continued) WARNING ! WARNING Excessive numbers of the same fault can lead to severe machine damage. Seek service expertise. Primary Message Secondary Message Alarm Message/ Primary Cause No Motor Current CA P Loss of Motor Current: Check sensor. Protective Limit Power Loss V P Power Loss: Check voltage supply.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides K. Machine Protect Limit Faults (Continued) WARNING ! WARNING Excessive numbers of the same fault can lead to severe machine damage. Seek service expertise. Primary Message Protective Limit Secondary Message Alarm Message/ Primary Cause Additional Cause/Remedy Run AUX Contact Fault RUN AUX Starter Contact Fault: Check 1CR/1M aux contacts. Run auxiliary contact opened while machine was running.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides L. Machine Alerts Primary Message Secondary Message Alarm Message/ Primary Cause High Amps at Shutdown High Amps at Recycle: Check guide vane drive. Sensor Fault Alert Leaving Cond Water Temp Sensor Fault: Check leaving condenser water sensor. Sensor Fault Alert Entering Cond Water Temp Sensor Fault: Check entering condenser water sensor.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides L. Machine Alerts (Continued) Primary Message Recycle Alert Secondary Message Alarm Message/ Primary Cause Excessive Recycle Starts Excessive recycle starts. Additional Cause/Remedy The machine load is too small to keep the machine on line and there have been more than 5 restarts in 4 hours. Increase machine load, adjust hot gas bypass, increase RECYCLE RESTART DELTA T.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides M. Spare Sensor Alert Messages Primary Message Secondary Message Alarm Message/Primary Cause Spare Sensor Alert Common CHWS Sensor Sensor Fault: Check common CHWS sensor. Spare Sensor Alert Common CHWR Sensor Sensor Fault: Check common CHWR sensor. Spare Sensor Alert Remote Reset Sensor Sensor Fault: Check remote reset temperature sensor.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides N. Other Problems/Malfunctions Description Remedy Chilled Water/Brine Temperature Too High (Machine Running) Chilled water set point set too high. Access set point on LID and verify. Capacity override or excessive cooling load (machine at design capacity). Check LID status messages. Check for outside air infiltration into conditioned space. Condenser temperature too high.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides N. Other Problems/Malfunctions (Continued) Description Remedy SMM Communications Failure Check that PSIO communication plugs are connected correctly. Check SMM communication plug. Check for proper SMM power supply. See Control Modules section. High Oil Temperature While Running Check for proper oil level (too much oil). On hermetic EX compressors, check that TXV valve is operating properly.
Table 9A — Thermistor Temperature (F) vs Resistance/Voltage Drop Temperature (F) Voltage Drop (V) -25.0 -24.0 -23.0 -22.0 -21.0 -20.0 -19.0 -18.0 -17.0 -16.0 -15.0 -14.0 -13.0 -12.0 -11.0 -10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 4.821 4.818 4.814 4.806 4.800 4.793 4.786 4.779 4.772 4.764 4.757 4.749 4.740 4.734 4.724 4.715 4.705 4.696 4.688 4.676 4.666 4.657 4.648 4.636 4.624 4.
Table 9A — Thermistor Temperature (F) vs Resistance/Voltage Drop (Continued) Temperature (F) Voltage Drop (V) Resistance (Ohms) Temperature (F) Voltage Drop (V) Resistance (Ohms) Temperature (F) Voltage Drop (V) Resistance (Ohms) 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 1.607 1.585 1.562 1.538 1.517 1.496 1.474 1.453 1.431 1.408 1.389 1.369 1.348 1.327 1.308 1.291 1.289 1.
Table 9B — Thermistor Temperature (C) vs Resistance/Voltage Drop Temperature (C) -40 -39 -38 -37 -36 -35 -34 -33 -32 -31 -30 -29 -28 -27 -26 -25 -24 -23 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 Voltage Drop (V) Resistance (Ohms) 4.896 4.889 4.882 4.874 4.866 4.857 4.848 4.838 4.828 4.817 4.806 4.794 4.782 4.769 4.755 4.740 4.725 4.710 4.693 4.676 4.657 4.639 4.619 4.598 4.577 4.554 4.531 4.507 4.482 4.456 4.428 4.400 4.371 4.341 4.310 4.278 4.245 4.211 4.
Table 9B — Thermistor Temperature (C) vs Resistance/Voltage Drop (Continued) Temperature (C) 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 Voltage Drop (V) 1.594 1.553 1.513 1.474 1.436 1.399 1.363 1.327 1.291 1.258 1.225 1.192 1.160 1.129 1.099 1.069 1.040 1.012 0.984 0.949 0.920 0.892 0.865 0.838 0.813 0.789 0.765 0.743 0.722 0.702 0.683 0.
Table 10 — 17/19EX Heat Exchanger, Economizer/Storage Vessel, Piping, and Pumpout Unit Weights* (Page 1 of 2) Cooler Size† Cooler Total Weight Cooler Charge Dry** Refrigerant lb Operating†† kg Economizer/ Storage Vessel Economizer Refrigerant Miscellaneous Piping Pumpout Unit lb kg lb kg lb kg lb kg 7,169 3 525 610 277 1,095 497 210 95 Water lb kg lb kg lb kg 41 21,674 9 831 26,120 11 848 2,005 909 2,441 1 107 42 22,019 9 988 26,736 12 127 2,142 972 2,575
Table 10 — 17/19EX Heat Exchanger, Economizer/Storage Vessel, Piping, and Pumpout Unit Weights* (Continued) Condenser Size† Condenser Total Weight Condenser Charge Dry** Operating†† Refrigerant Water lb lb lb lb 41 42 43 45 46 47 51 52 53 55 56 57 13,768 14,118 14,468 16,676 17,172 17,669 17,188 17,848 18,400 20,725 21,663 22,446 kg 6 6 6 7 7 8 7 8 8 9 9 10 245 404 563 564 789 015 796 096 346 401 826 181 16,999 17,498 17,978 20,800 21,489 22,178 20,993 21,923 22,682 25,598 26,896 27,980 kg 7
Table 11 — Additional Condenser Weights* Component Heat Exchanger Size 41 – 43 45 – 47 Condenser 51 – 53 55 – 57 Waterbox Type Number of Passes Design Maximum Additional Dry Weight Additional Water Weight psig kPa lb lb kg kg NIH 1, 3 150 1034 344 156 - - NIH 1, 3 300 2068 1652 749 - - NIH 2 300 2068 1132 513 - - Marine 1, 3 150 1034 1692 767 3 400 1 542 Marine 2 150 1034 674 306 1 700 771 Marine 1, 3 300 2068 2651 1 202 3 400 1 542 Marine 2
Table 12 — Compressor/Motor/Suction Elbow Weights (English) Compressor/Motor/Suction Elbow Weight (lb) 17 Series, All Compressor Sizes* 14,650 19 Series, 51-89 Compressor Sizes† 8,853 19 Series, 421-469 Compressor Sizes** 6,352 19 Series, 531-599 Compressor Sizes†† 9,950 * Based on 4160 v, FD motor. † Based on 6900 v, DQ motor. ** Based on 6900 v, DP motor. †† Based on 6900 v, EE motor.
Table 13 — Additional Cooler Weights* Component Condenser Waterbox Type Number of Passes Design Maximum Water Pressure Additional Dry Weight Additional Water Weight psig kPa lb lb kg kg NIH 1, 3 150 1034 515 234 - - NIH 1, 3 300 2068 2941 1334 - - NIH 2 300 2068 2085 946 - - Marine 1, 3 150 1034 2100 953 5102 2314 Marine 2 150 1034 792 359 2551 1157 Marine 1, 3 300 2068 3844 1744 5102 2314 Marine 2 300 2068 2536 1150 2551 1157 NIH — Nozzl
Table 14 — Marine Waterbox Cover Weights* Heat Exchanger Size 41 – 48 51 – 57 Design Maximum Water Pressure Cooler psi kPa lb kg lb kg 150 1034 2236 1015 1275 579 300 2068 3060 1389 1660 754 150 1034 – – 1643 746 300 2068 – – 2243 1018 Condenser * Heat exchangers with marine waterboxes have heavier dry and operating weights than heat exchangers with nozzle-in-head waterboxes.
Table 15 — NIH Waterbox Cover Weights* Heat Exchanger Size Passes 1 41 – 48 2† 3 1 51 – 57 2† 3 Design Maximum Water Pressure Cooler psi kPa lb kg lb 150 1034 2997 1361 1735 788 300 2068 4225 1918 2510 1140 150 1034 2984 1355 1885 856 300 2068 4188 1901 2590 1176 150 1034 3035 1378 1777 807 300 2068 4244 1927 2539 1153 150 1034 – – 2032 923 300 2068 – – 2940 1335 150 1034 – – 2649 1203 300 2068 – – 3640 1653 150 1034 – – – –
Table 16 — Auxiliary Systems, Electrical Data Power Source 1 Item Supply V-PH-HZ FLA LRA Control Module and Actuator 115-1-60 115-1-50 3.50 — Oil Sump Heater 115-1-60 115-1-50 8.70 — 200/240-3-60 380/480-3-60 507/619-3-60 4.32 2.15 2.13 24.5 12.2 25.0 220/240-3-50 346/440-3-50 4.83 2.59 28.0 12.2 200/208-3-60 220/240-3-60 440/480-3-60 550/600-3-60 10.9 9.50 4.70 3.80 63.5 57.5 28.8 23.0 380/415-3-50 4.70 28.
Table 17 — Open-Drive Compressor Fits and Clearances Clearance 17FA4 Item 17FA5 Type of Measure Description Min in. Max mm in. Min mm. in. Max mm in. mm 1 1st stage impeller to diaphragm Axial 2 2nd stage impeller to discharge wall 3 1st stage labyrinth .016 .4060 .020 .5080 .016 .4060 .020 .5080 Diametral 4 Interstage labyrinth .012 .3050 .016 .4060 .012 .3050 .016 .4060 Diametral 5 2nd stage labyrinth .008 .2030 .012 .3050 .008 .2030 .012 .
Table 17 — Open-Drive Compressor Fits and Clearances (Continued) Clearance 17FA4 Item 17FA5 Type of Measure Description Min Max Min Max in. mm in. mm. in. mm in. mm 16 Drive-end journal bearing .003 .0762 .005 .1270 .0035 .0889 .0055 .1397 Diametral 17 Windage baffle to shaft .083 2.108 .104 2.642 .079 2.007 .100 2.540 Diametral 18 Inner carbon ring travel .06 MIN Each Direction See Figure 55 for item callouts. .
Table 17 — Open-Drive Compressor Fits and Clearances (Continued) Tabulation — Impeller Clearances (Open-Drive Compressors) Dinension* Compressor Size Shroud Diam Code Impeller Diameter Item 1 in. 3 4 17FA5 5 6 mm in. Item 2 mm in. mm 1 12.00 304.8 .837 21.26 .638 16.21 3 12.38 314.5 .797 20.24 .609 15.47 5 12.75 323.8 .757 19.23 .579 14.71 7 13.25 336.6 .717 18.21 .541 13.74 9 13.75 349.2 .690 17.53 .541 13.74 1 12.00 304.8 .977 24.82 .760 19.30 3 12.
Table 18 — Hermetic Compressor Fits and Clearances Clearance† Item* Description in. Minimum Type of Measure mm Maximum Minimum Maximum 1 1st Stage Impeller to Diaphragm Axial 2 2nd Stage Impeller to Discharge Wall 3 1st Stage Labyrinth .0160 .0200 .4060 .5080 Diametral 4 Interstage Labyrinth .0120 .0160 .3050 .4060 Diametral 5 2nd Stage Labyrinth .0080 .0120 .2030 .3050 Diametral 6 Balancing Piston Labyrinth .0080 .0120 .2030 .
Table 18 — Hermetic Compressor Fits and Clearances (Continued) Tabulation — Impeller Clearances (Hermetic Compressors) 19EX Shroud Code FA Shroud Code Impeller Code Dimension* Impeller Diameter Item 1 Item 2 in. mm in. mm in. mm 3 1 3 5 7 9 12.00 12.38 12.75 13.25 13.75 304.8 314.5 323.8 336.6 349.2 0.837 0.797 0.757 0.717 0.690 21.26 20.24 19.23 18.21 17.53 0.638 0.609 0.579 0.541 0.541 16.21 15.47 14.71 13.74 13.74 4 1 3 5 7 9 12.00 12.38 12.75 13.25 13.75 304.8 314.5 323.8 336.
Figure 1 — 17/19EX Identification
Figure 2 — Typical 17EX Installation
Figure 3 — Typical 19EX Installation
Figure 4 — Refrigerant, Motor Cooling, and Oil Cooling Cycles
v Figure 5 — Hermetic Compressor Lubrication System (EX Compressor Shown)
Figure 6 — Open-Drive (17 Series) Lubrication Cycle
Machine Rear; Compressor Side View Figure 7 — 17EX Controls and Sensor Locations (Figure 7 continued on next page)
Compressor End View Figure 7 — 17EX Controls and Sensor Locations (Figure 7 continued on next page)
Machine Front View Figure 7 — 17EX Controls and Sensor Locations (Figure 7 continued on next page)
Motor End View Figure 7 — 17EX Controls and Sensor Locations (Figure 7 continued on next page)
Figure 7 — 17EX Controls and Sensor Locations
Machine Rear; Compressor Side View Figure 8 — 19EX Controls and Sensor Locations (Figure 8 continued on next page)
Compressor End View Figure 8 — 19EX Controls and Sensor Locations (Figure 8 continued on next page)
Machine Rear View Figure 8 — 19EX Controls and Sensor Locations (Figure 8 continued on next page)
Motor End View Figure 8 — 19EX Controls and Sensor Locations (Figure 8 continued on next page)
Figure 8 — 19EX Controls and Sensor Locations
Figure 9 — Control Center (Front View); Shown with Options Module
Figure 10 — Control Sensors (Temperature)
Figure 11 — Control Sensors (Pressure Transducer, Typical)
Figure 12 — Power Panel without Options (Open-Drive Machine Shown)
Figure 13 — Power Panel with Options (Hermetic Machine Shown)
Figure 14 — LID Default Screen
Figure 15 — LID Service Screen
Figure 16 — 17/19EX Menu Structure
Figure 17 — 17/19EX Service Menu Structure
Figure 18 — Example of Point Status Screen (Status01)
Figure 19 — Example of Time Schedule Operation Screen
Figure 20 — Example of Set Point Screen
Figure 21 — 17/19EX Hot Gas Bypass/Surge Prevention
Figure 22 — 17/19EX with Default Metric Settings
Figure 23 — Example of Attach to Network Device Screen
Figure 24 — Example of Holiday Period Screen
Figure 25 — Control Sequence
Figure 26 — Typical Wet-Bulb Type Vacuum Indicator
Figure 27 — Shipping Bolt on Open Drive Motor
Figure 28 — 17/19EX Leak Test Procedures
Figure 29 — Dehydration Cold Trap
Figure 30 — Correct Motor Rotation
Figure 31 — Refrigeration Log
Figure 32 — Pumpout Arrangement and Valve Number Locations (12-ft Vessel Shown) (Figure 32 continued on next page)
Figure 32 — Pumpout Arrangement and Valve Number Locations (12-ft Vessel Shown) (Continued)
Figure 33 — Pumpout Unit Wiring Schematic (19EX Shown)
Figure 34 — Optional Pumpout Compressor
Figure 35 — Electronic Vane Actuator Linkage
Figure 36 — Compressor Contact Seal (Open-Drive Machines)
Figure 37 — Checking Preliminary Alignment
Figure 38 — Measuring Angular Misalignment in Elevation
Figure 39 — Measuring Angular Misalignment on Brackets
Figure 40 — Alignment Formula
Figure 41 — Adjusting Angular Misalignment in Plan
Preparation Figure 42 — Correcting Parallel Misalignment (Figure 42 continued on next page)
Measurement Figure 42 — Correcting Parallel Misalignment (Figure 42 continued on next page)
Adjustment Figure 42 — Correcting Parallel Misalignment
To Check Angular Alignment Figure 43 — Alignment Check — Assembled Coupling (Figure 43 continued on next page)
To Check Parallel Alignment Figure 43 — Alignment Check — Assembled Coupling
Figure 44 — Removing the Oil Filter
Figure 45 — Typical Float Valve Arrangement
Figure 46 — Lifting Open-Drive Motor
Figure 47 — Controls for Optional Pumpout Compressor
Figure 48 — Oil Differential Pressure/Power Supply Module
Figure 49 — PSIO Module LED Locations
Figure 50 — LID Module (Rear View) and LED Locations
Figure 51 — Processor (PSIO) Module
Figure 52 — Starter Management Module (SMM)
Switch Setting Options Module 1 Options Module 2 S1 S2 6 4 7 2 Figure 53 — Options Module
Figure 54 — Model Number Nomenclature for Compressor Size (See Figure 1 Also)
Note: See Table 17 for dimensions Figure 55 — Open-Drive Compressor Fits and Clearances (Figure 55 continued on next page)
Note: See Table 17 for dimensions Figure 55 — Open-Drive Compressor Fits and Clearances (Figure 55 continued on next page)
Note: See Table 17 for dimensions Figure 55 — Open-Drive Compressor Fits and Clearances
View A View B Refer to Table 18 for dimensions Figure 56 — Hermetic Compressor Fits and Clearances (Figure 56 continued on next page)
Figure 56 — Hermetic Compressor Fits and Clearances
Figure 57 — Electronic PIC Controls Wiring Schematic — Hermetic Machine (Figure 57 continued on next page)
Figure 57 — Electronic PIC Controls Wiring Schematic — Hermetic Machine
Figure 58 — Electronic PIC Controls Wiring Schematic — Open Drive Machine (Figure 58 continued on next page)
Figure 58 — Electronic PIC Controls Wiring Schematic — Open Drive Machine
Figure 59 — Machine Power Panel, Starter Assembly, and Motor Wiring Schematic (Figure 59 continued on next page)
Figure 59 — Machine Power Panel, Starter Assembly, and Motor Wiring Schematic
Figure 60 — Hermetic Drive — Power Panel with Water-Cooled Oil Cooler
Figure 61 — Hermetic Drive — Power Panel with Motor Cooling Solenoid
Figure 62 — Open-Drive — Power Panel
INITIAL START-UP CHECKLIST FOR 17/19EX CENTRIFUGAL LIQUID CHILLER (Remove and use for job file.) MACHINE INFORMATION: NAME JOB NO. ADDRESS MODEL CITY STATE ZIP S/N DESIGN CONDITIONS: TONS FLOW RATE BRINE TEMPERATURE IN TEMPERATURE OUT PRESSURE DROP PASS SUCTION TEMPERATURE CONDENSER TEMPERATURE COOLER ****** CONDENSER ****** COMPRESSOR: Volts RLA STARTER: Mfg Type OIL PUMP: Volts RLA REFRIGERANT: Charge OLTA OLTA Lbs Assemble . . . . . . . . . . . . . . . Yes M Leak Test .
INSPECT WIRING AND RECORD ELECTRICAL DATA: RATINGS: Motor(s) Amps Motor Voltage Line Voltages: Motor Oil Pump Voltage Oil Pump Starter Amps Controls/Oil Heater STARTER CHECKOUT: Check continuity T1 to T1, etc. (Motor to starter, disconnect motor leads T4, T5, T6.) Do not megohm test solid-state starters, disconnect leads to motor and megger the leads.
17/19EX CENTRIFUGAL LIQUID CHILLER CONFIGURATION SETTINGS LOG (Remove and use for job file.) SET POINT TABLE CONFIGURATION SHEET DESCRIPTION RANGE UNITS DEFAULT Base Demand Limit 40 to 100 % LCW Setpoint 20 to 120 (–6.7 to 48.9) DEG F (DEG C) 50.0 ECW Setpoint 20 to 120 (–6.7 to 48.9) DEG F (DEG C) 60.0 ICE BUILD Setpoint 20 to 60 (–6.7 to 15.6) DEG F (DEG C) 40.
LOCAL MODE TIME SCHEDULE CONFIGURATION SHEET Day Flag M T W T F S S H OCCPC01S Occupied Time Unoccupied Time Period 1: Period 2: Period 3: Period 4: Period 5: Period 6: Period 7: Period 8: NOTE: Default setting is OCCUPIED 24 hours/day. ICE BUILD MODE TIME SCHEDULE CONFIGURATION SHEET Day Flag M T W T F S S H OCCPC02S Occupied Time Unoccupied Time Period 1: Period 2: Period 3: Period 4: Period 5: Period 6: Period 7: Period 8: NOTE: Default setting is UNOCCUPIED 24 hours/day.
CONFIG TABLE CONFIGURATION SHEET DESCRIPTION RANGE UNITS DEFAULT –30 to 30 (–17 to 17) DEG F (DEG C) 10 (6) Remote Temp (No Reset) –40 to 245 (–40 to 118) DEG F (DEC C) 85 (29) Remote Temp (Full Reset) –40 to 245 (–40 to 118) DEG F (DEG C) 65 (18) Degrees Reset –30 to 30 (–17 to 17) DEG F (DEG C) 10 (6) CHW Temp (No Reset) 0 to 15 (0 to 8) DEG F (DEG C) 10 (6) CHW Temp (Full Reset) 0 to 15 (0 to 8) DEG F (DEG C) 0 (0) Degrees Reset –30 to 30 (–17 to 17) DEG F (DEG C) 5 (3) Sel
LEAD/LAG TABLE CONFIGURATION SHEET DESCRIPTION RANGE UNITS DEFAULT LEAD/LAG SELECT DISABLE =0, LEAD =1, LAG =2, STANDBY =3 0, 1, 2, 3 Load Balance Option Disable/Enable Disable Common Sensor Option Disable/Enable Disable LAG Percent Capacity 25 to 75 LAG Address 1 to 236 LAG START Timer 2 to 60 Min 10 LAG STOP Timer 2 to 60 Min 10 PRESTART FAULT Timer 0 to 30 Min 5 STANDBY Chiller Option Disable/Enable STANDBY Percent Capacity 25 to 75 STANDBY Address 1 to 236 0 % 50 92
SERVICE1 TABLE CONFIGURATION SHEET DESCRIPTION Motor Temp Override RANGE UNITS DEFAULT 150 to 200 (66 to 93) DEG F (DEG C) 200 (93) Cond Pressure Override 90 to 200 (620 to 1379) Refrig Override Delta T 2 to 5 (1 to 3) psig (kPa) DEG F (DEG C) 125 (862) 3 (1.6) Chilled Medium Water/Brine Brine Refrig Trippoint 8 to 40 (–13.
SERVICE1 TABLE CONFIGURATION SHEET DESCRIPTION RANGE UNITS DEFAULT Motor Rated Load Amps 1 to 9999 AMPS 200 Motor Rated Line Voltage 1 to 9999 VOLTS 460 Meter Rated Line kW 1 to 9999 kW 600 Line Frequency 0=60 Hz/1=50 Hz 0/1 Compressor Starter Type REDUCE/FULL Condenser Freeze Point –20 to 35 (–28.9 to 1.7) DEG F (DEG C) 34 (1.1) Soft Stop Amps Threshold 40 to 100 % 100 Stop-to-Start Timer* 3 to 50 MIN 20 0 REDUCE *Open-drive machines only.
SERVICE2 TABLE CONFIGURATION SHEET DESCRIPTION RANGE RESET 20 mA Power Source 0/1 DEMAND 20 mA Power Source UNITS DEFAULT 0 = EXTERNAL, 1 = INTERNAL 0 0/1 0 = EXTERNAL, 1 = INTERNAL 0 CHWS Temp Enable 0 to 4 0 = DISABLE, 1 = HIGH ALERT, 2 = LOW ALERT, 3 = HIGH ALARM, 4 = LOW ALARM 0 CHWS Temp Alert –40 to 245 (–40 to 118) DEG F (DEG C) CHWR Temp Enable 0 to 4 0 = DISABLE, 1 = HIGH ALERT, 2 = LOW ALERT, 3 = HIGH ALARM, 4 = LOW ALARM CHWR Temp Alert –40 to 245 (–40 to 118) DEG F (DEG C
SERVICE3 TABLE CONFIGURATION SHEET DESCRIPTION RANGE UNITS DEFAULT Proportional Inc Band 2 to 10 6.5 Proportional Dec Band 2 to 10 6.0 Proportional ECW Gain 1 to 3 2.
BROADCAST (BRODEFS) CONFIGURATION SHEET DESCRIPTION Activate RANGE UNITS Yes/No DEFAULT No OAT Broadcast Controller Name 8 characters Text Bus Number 0 to 239 Bus #s 0 Element Number 0 to 239 SE #s 0 Controller Name 8 characters Text Bus Number 0 to 239 Bus #s 0 Element Number 0 to 239 SE #s 0 OARH Broadcast Daylight Savings Start Month 1 to 12 4 Day 1 to 31 15 Time 00:00 to 23:59 HH:MM Minutes To Add 1 to 1440 MIN 02:00 60 Daylight Savings Stop Month 1 to 12 10 D
MACHINE ALIGNMENT REPORT JOB NAME COUPLING SIZE JOB NUMBER TYPE MACHINE SER. NO.
